## Uses of Interface
io.vertx.core.AsyncResult

- Packages that use AsyncResult
  Package | Description
  --- | ---
  io.vertx.core |
  io.vertx.core.datagram |
  io.vertx.core.dns |
  io.vertx.core.eventbus |
  io.vertx.core.file |
  io.vertx.core.http |
  io.vertx.core.net |
  io.vertx.core.shareddata |
  io.vertx.core.spi |
  io.vertx.core.spi.cluster |
  io.vertx.ext.auth |
  io.vertx.ext.jdbc |
  io.vertx.ext.mail |
  io.vertx.ext.mongo |
  io.vertx.ext.unit |
  io.vertx.ext.web.handler.sockjs |
  io.vertx.ext.web.sstore |
  io.vertx.ext.web.templ |
  io.vertx.lang.rxjava |
  io.vertx.redis |
  io.vertx.rx.java |
  io.vertx.rxjava.core |
  io.vertx.rxjava.core.datagram |
  io.vertx.rxjava.core.dns |
  io.vertx.rxjava.core.eventbus |
  io.vertx.rxjava.core.file |
  io.vertx.rxjava.core.http |
  io.vertx.rxjava.core.net |
  io.vertx.rxjava.core.shareddata |
  io.vertx.rxjava.ext.auth |
  io.vertx.rxjava.ext.auth.common |
  io.vertx.rxjava.ext.jdbc |
  io.vertx.rxjava.ext.mail |
  io.vertx.rxjava.ext.mongo |
  io.vertx.rxjava.ext.unit |
  io.vertx.rxjava.ext.web.sstore |
  io.vertx.rxjava.ext.web.templ |
  io.vertx.rxjava.redis |
  io.vertx.spi.cluster.hazelcast |

- - ### Uses of AsyncResult in io.vertx.core

    Subinterfaces of AsyncResult in io.vertx.core
    Modifier and Type | Interface and Description
    --- | ---
    `interface` | `Future<T>` Represents the result of an action that may, or may not, have occurred yet.

    Method parameters in io.vertx.core with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `void` | Vertx.`close(Handler<AsyncResult<Void>> completionHandler)` Like `Vertx.close()` but the completionHandler will be called when the close is complete
    `static void` | Vertx.`clusteredVertx(VertxOptions options, Handler<AsyncResult<Vertx>> resultHandler)` Creates a clustered instance using the specified options.
    `void` | Vertx.`deployVerticle(String name, DeploymentOptions options, Handler<AsyncResult<String>> completionHandler)` Like `Vertx.deployVerticle(String, Handler)` but `DeploymentOptions` are provided to configure the deployment.
    `void` | Vertx.`deployVerticle(String name, Handler<AsyncResult<String>> completionHandler)` Like `Vertx.deployVerticle(String)` but the completionHandler will be notified when the deployment is complete.
    `void` | Vertx.`deployVerticle(Verticle verticle, DeploymentOptions options, Handler<AsyncResult<String>> completionHandler)` Like `Vertx.deployVerticle(Verticle, Handler)` but `DeploymentOptions` are provided to configure the deployment.
    `void` | Vertx.`deployVerticle(Verticle verticle, Handler<AsyncResult<String>> completionHandler)` Like `Vertx.deployVerticle(Verticle)` but the completionHandler will be notified when the deployment is complete.
    `<T> void` | Vertx.`executeBlocking(Handler<Future<T>> blockingCodeHandler, boolean ordered, Handler<AsyncResult<T>> resultHandler)` Safely execute some blocking code.
    `<T> void` | Vertx.`executeBlocking(Handler<Future<T>> blockingCodeHandler, Handler<AsyncResult<T>> resultHandler)` Like `Vertx.executeBlocking(Handler, boolean, Handler)` called with ordered = true.
    `void` | Future.`setHandler(Handler<AsyncResult<T>> handler)` Set a handler for the result.
    `void` | Vertx.`undeploy(String deploymentID, Handler<AsyncResult<Void>> completionHandler)` Like `Vertx.undeploy(String)` but the completionHandler will be notified when the undeployment is complete.

  - ### Uses of AsyncResult in io.vertx.core.datagram

    Method parameters in io.vertx.core.datagram with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `DatagramSocket` | DatagramSocket.`blockMulticastGroup(String multicastAddress, String sourceToBlock, Handler<AsyncResult<DatagramSocket>> handler)` Block the given address for the given multicast address and notifies the `Handler` once the operation completes.
    `DatagramSocket` | DatagramSocket.`blockMulticastGroup(String multicastAddress, String networkInterface, String sourceToBlock, Handler<AsyncResult<DatagramSocket>> handler)` Block the given address for the given multicast address on the given network interface and notifies the `Handler` once the operation completes.
    `void` | DatagramSocket.`close(Handler<AsyncResult<Void>> handler)` Closes the `DatagramSocket` implementation asynchronous and notifies the handler once done.
    `DatagramSocket` | DatagramSocket.`listen(int port, String host, Handler<AsyncResult<DatagramSocket>> handler)` Start listening on the given port and host.
    `DatagramSocket` | DatagramSocket.`listenMulticastGroup(String multicastAddress, Handler<AsyncResult<DatagramSocket>> handler)` Joins a multicast group and listens for packets send to it.
    `DatagramSocket` | DatagramSocket.`listenMulticastGroup(String multicastAddress, String networkInterface, String source, Handler<AsyncResult<DatagramSocket>> handler)` Joins a multicast group and listens for packets send to it on the given network interface.
    `DatagramSocket` | DatagramSocket.`send(Buffer packet, int port, String host, Handler<AsyncResult<DatagramSocket>> handler)` Write the given `Buffer` to the `SocketAddress`.
    `DatagramSocket` | DatagramSocket.`send(String str, int port, String host, Handler<AsyncResult<DatagramSocket>> handler)` Write the given `String` to the `SocketAddress` using UTF8 encoding.
    `DatagramSocket` | DatagramSocket.`send(String str, String enc, int port, String host, Handler<AsyncResult<DatagramSocket>> handler)` Write the given `String` to the `SocketAddress` using the given encoding.
    `DatagramSocket` | DatagramSocket.`unlistenMulticastGroup(String multicastAddress, Handler<AsyncResult<DatagramSocket>> handler)` Leaves a multicast group and stops listening for packets send to it.
    `DatagramSocket` | DatagramSocket.`unlistenMulticastGroup(String multicastAddress, String networkInterface, String source, Handler<AsyncResult<DatagramSocket>> handler)` Leaves a multicast group and stops listening for packets send to it on the given network interface.

  - ### Uses of AsyncResult in io.vertx.core.dns

    Method parameters in io.vertx.core.dns with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `DnsClient` | DnsClient.`lookup(String name, Handler<AsyncResult<String>> handler)` Try to lookup the A (ipv4) or AAAA (ipv6) record for the given name.
    `DnsClient` | DnsClient.`lookup4(String name, Handler<AsyncResult<String>> handler)` Try to lookup the A (ipv4) record for the given name.
    `DnsClient` | DnsClient.`lookup6(String name, Handler<AsyncResult<String>> handler)` Try to lookup the AAAA (ipv6) record for the given name.
    `DnsClient` | DnsClient.`resolveA(String name, Handler<AsyncResult<List<String>>> handler)` Try to resolve all A (ipv4) records for the given name.
    `DnsClient` | DnsClient.`resolveAAAA(String name, Handler<AsyncResult<List<String>>> handler)` Try to resolve all AAAA (ipv6) records for the given name.
    `DnsClient` | DnsClient.`resolveCNAME(String name, Handler<AsyncResult<List<String>>> handler)` Try to resolve the CNAME record for the given name.
    `DnsClient` | DnsClient.`resolveMX(String name, Handler<AsyncResult<List<MxRecord>>> handler)` Try to resolve the MX records for the given name.
    `DnsClient` | DnsClient.`resolveNS(String name, Handler<AsyncResult<List<String>>> handler)` Try to resolve the NS records for the given name.
    `DnsClient` | DnsClient.`resolvePTR(String name, Handler<AsyncResult<String>> handler)` Try to resolve the PTR record for the given name.
    `DnsClient` | DnsClient.`resolveSRV(String name, Handler<AsyncResult<List<SrvRecord>>> handler)` Try to resolve the SRV records for the given name.
    `DnsClient` | DnsClient.`resolveTXT(String name, Handler<AsyncResult<List<String>>> handler)` Try to resolve the TXT records for the given name.
    `DnsClient` | DnsClient.`reverseLookup(String ipaddress, Handler<AsyncResult<String>> handler)` Try to do a reverse lookup of an IP address.

  - ### Uses of AsyncResult in io.vertx.core.eventbus

    Method parameters in io.vertx.core.eventbus with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `void` | EventBus.`close(Handler<AsyncResult<Void>> completionHandler)` Close the event bus and release any resources held
    `void` | MessageConsumer.`completionHandler(Handler<AsyncResult<Void>> completionHandler)` Optional method which can be called to indicate when the registration has been propagated across the cluster.
    `<R> void` | Message.`reply(Object message, DeliveryOptions options, Handler<AsyncResult<Message<R>>> replyHandler)` The same as `reply(R message, DeliveryOptions)` but you can specify handler for the reply - i.e.
    `<R> void` | Message.`reply(Object message, Handler<AsyncResult<Message<R>>> replyHandler)` The same as `reply(R message)` but you can specify handler for the reply - i.e.
    `<T> EventBus` | EventBus.`send(String address, Object message, DeliveryOptions options, Handler<AsyncResult<Message<T>>> replyHandler)` Like `EventBus.send(String, Object, DeliveryOptions)` but specifying a `replyHandler` that will be called if the recipient subsequently replies to the message.
    `<T> EventBus` | EventBus.`send(String address, Object message, Handler<AsyncResult<Message<T>>> replyHandler)` Like `EventBus.send(String, Object)` but specifying a `replyHandler` that will be called if the recipient subsequently replies to the message.
    `void` | MessageConsumer.`unregister(Handler<AsyncResult<Void>> completionHandler)` Unregisters the handler which created this registration

  - ### Uses of AsyncResult in io.vertx.core.file

    Method parameters in io.vertx.core.file with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `FileSystem` | FileSystem.`chmod(String path, String perms, Handler<AsyncResult<Void>> handler)` Change the permissions on the file represented by `path` to `perms`, asynchronously.
    `FileSystem` | FileSystem.`chmodRecursive(String path, String perms, String dirPerms, Handler<AsyncResult<Void>> handler)` Change the permissions on the file represented by `path` to `perms`, asynchronously.
    `FileSystem` | FileSystem.`chown(String path, String user, String group, Handler<AsyncResult<Void>> handler)` Change the ownership on the file represented by `path` to `user` and {code group}, asynchronously.
    `void` | AsyncFile.`close(Handler<AsyncResult<Void>> handler)` Close the file.
    `FileSystem` | FileSystem.`copy(String from, String to, Handler<AsyncResult<Void>> handler)` Copy a file from the path `from` to path `to`, asynchronously.
    `FileSystem` | FileSystem.`copyRecursive(String from, String to, boolean recursive, Handler<AsyncResult<Void>> handler)` Copy a file from the path `from` to path `to`, asynchronously.
    `FileSystem` | FileSystem.`createFile(String path, Handler<AsyncResult<Void>> handler)` Creates an empty file with the specified `path`, asynchronously.
    `FileSystem` | FileSystem.`createFile(String path, String perms, Handler<AsyncResult<Void>> handler)` Creates an empty file with the specified `path` and permissions `perms`, asynchronously.
    `FileSystem` | FileSystem.`delete(String path, Handler<AsyncResult<Void>> handler)` Deletes the file represented by the specified `path`, asynchronously.
    `FileSystem` | FileSystem.`deleteRecursive(String path, boolean recursive, Handler<AsyncResult<Void>> handler)` Deletes the file represented by the specified `path`, asynchronously.
    `FileSystem` | FileSystem.`exists(String path, Handler<AsyncResult<Boolean>> handler)` Determines whether the file as specified by the path `path` exists, asynchronously.
    `AsyncFile` | AsyncFile.`flush(Handler<AsyncResult<Void>> handler)` Same as `AsyncFile.flush()` but the handler will be called when the flush is complete or if an error occurs
    `FileSystem` | FileSystem.`fsProps(String path, Handler<AsyncResult<FileSystemProps>> handler)` Returns properties of the file-system being used by the specified `path`, asynchronously.
    `FileSystem` | FileSystem.`link(String link, String existing, Handler<AsyncResult<Void>> handler)` Create a hard link on the file system from `link` to `existing`, asynchronously.
    `FileSystem` | FileSystem.`lprops(String path, Handler<AsyncResult<FileProps>> handler)` Obtain properties for the link represented by `path`, asynchronously.
    `FileSystem` | FileSystem.`mkdir(String path, Handler<AsyncResult<Void>> handler)` Create the directory represented by `path`, asynchronously.
    `FileSystem` | FileSystem.`mkdir(String path, String perms, Handler<AsyncResult<Void>> handler)` Create the directory represented by `path`, asynchronously.
    `FileSystem` | FileSystem.`mkdirs(String path, Handler<AsyncResult<Void>> handler)` Create the directory represented by `path` and any non existent parents, asynchronously.
    `FileSystem` | FileSystem.`mkdirs(String path, String perms, Handler<AsyncResult<Void>> handler)` Create the directory represented by `path` and any non existent parents, asynchronously.
    `FileSystem` | FileSystem.`move(String from, String to, Handler<AsyncResult<Void>> handler)` Move a file from the path `from` to path `to`, asynchronously.
    `FileSystem` | FileSystem.`open(String path, OpenOptions options, Handler<AsyncResult<AsyncFile>> handler)` Open the file represented by `path`, asynchronously.
    `FileSystem` | FileSystem.`props(String path, Handler<AsyncResult<FileProps>> handler)` Obtain properties for the file represented by `path`, asynchronously.
    `AsyncFile` | AsyncFile.`read(Buffer buffer, int offset, long position, int length, Handler<AsyncResult<Buffer>> handler)` Reads `length` bytes of data from the file at position `position` in the file, asynchronously.
    `FileSystem` | FileSystem.`readDir(String path, Handler<AsyncResult<List<String>>> handler)` Read the contents of the directory specified by `path`, asynchronously.
    `FileSystem` | FileSystem.`readDir(String path, String filter, Handler<AsyncResult<List<String>>> handler)` Read the contents of the directory specified by `path`, asynchronously.
    `FileSystem` | FileSystem.`readFile(String path, Handler<AsyncResult<Buffer>> handler)` Reads the entire file as represented by the path `path` as a `Buffer`, asynchronously.
    `FileSystem` | FileSystem.`readSymlink(String link, Handler<AsyncResult<String>> handler)` Returns the path representing the file that the symbolic link specified by `link` points to, asynchronously.
    `FileSystem` | FileSystem.`symlink(String link, String existing, Handler<AsyncResult<Void>> handler)` Create a symbolic link on the file system from `link` to `existing`, asynchronously.
    `FileSystem` | FileSystem.`truncate(String path, long len, Handler<AsyncResult<Void>> handler)` Truncate the file represented by `path` to length `len` in bytes, asynchronously.
    `FileSystem` | FileSystem.`unlink(String link, Handler<AsyncResult<Void>> handler)` Unlinks the link on the file system represented by the path `link`, asynchronously.
    `AsyncFile` | AsyncFile.`write(Buffer buffer, long position, Handler<AsyncResult<Void>> handler)` Write a `Buffer` to the file at position `position` in the file, asynchronously.
    `FileSystem` | FileSystem.`writeFile(String path, Buffer data, Handler<AsyncResult<Void>> handler)` Creates the file, and writes the specified `Buffer data` to the file represented by the path `path`, asynchronously.

  - ### Uses of AsyncResult in io.vertx.core.http

    Method parameters in io.vertx.core.http with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `void` | HttpServer.`close(Handler<AsyncResult<Void>> completionHandler)` Like `HttpServer.close()` but supplying a handler that will be called when the server is actually closed (or has failed).
    `HttpServer` | HttpServer.`listen(Handler<AsyncResult<HttpServer>> listenHandler)` Like `HttpServer.listen()` but supplying a handler that will be called when the server is actually listening (or has failed).
    `HttpServer` | HttpServer.`listen(int port, Handler<AsyncResult<HttpServer>> listenHandler)` Like `HttpServer.listen(int)` but supplying a handler that will be called when the server is actually listening (or has failed).
    `HttpServer` | HttpServer.`listen(int port, String host, Handler<AsyncResult<HttpServer>> listenHandler)` Like `HttpServer.listen(int, String)` but supplying a handler that will be called when the server is actually listening (or has failed).
    `HttpServerResponse` | HttpServerResponse.`sendFile(String filename, Handler<AsyncResult<Void>> resultHandler)` Like `HttpServerResponse.sendFile(String)` but providing a handler which will be notified once the file has been completely written to the wire.

  - ### Uses of AsyncResult in io.vertx.core.net

    Method parameters in io.vertx.core.net with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `void` | NetServer.`close(Handler<AsyncResult<Void>> completionHandler)` Like `NetServer.close()` but supplying a handler that will be notified when close is complete.
    `NetClient` | NetClient.`connect(int port, String host, Handler<AsyncResult<NetSocket>> connectHandler)` Open a connection to a server at the specific `port` and `host`.
    `NetServer` | NetServer.`listen(Handler<AsyncResult<NetServer>> listenHandler)` Like `NetServer.listen()` but providing a handler that will be notified when the server is listening, or fails.
    `NetServer` | NetServer.`listen(int port, Handler<AsyncResult<NetServer>> listenHandler)` Like `NetServer.listen(int)` but providing a handler that will be notified when the server is listening, or fails.
    `NetServer` | NetServer.`listen(int port, String host, Handler<AsyncResult<NetServer>> listenHandler)` Like `NetServer.listen(int, String)` but providing a handler that will be notified when the server is listening, or fails.
    `NetSocket` | NetSocket.`sendFile(String filename, Handler<AsyncResult<Void>> resultHandler)` Same as `NetSocket.sendFile(String)` but also takes a handler that will be called when the send has completed or a failure has occurred

  - ### Uses of AsyncResult in io.vertx.core.shareddata

    Method parameters in io.vertx.core.shareddata with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `void` | Counter.`addAndGet(long value, Handler<AsyncResult<Long>> resultHandler)` Add the value to the counter atomically and return the new count
    `void` | AsyncMap.`clear(Handler<AsyncResult<Void>> resultHandler)` Clear all entries in the map
    `void` | Counter.`compareAndSet(long expected, long value, Handler<AsyncResult<Boolean>> resultHandler)` Set the counter to the specified value only if the current value is the expectec value.
    `void` | Counter.`decrementAndGet(Handler<AsyncResult<Long>> resultHandler)` Decrement the counter atomically and return the new count
    `void` | Counter.`get(Handler<AsyncResult<Long>> resultHandler)` Get the current value of the counter
    `void` | AsyncMap.`get(K k, Handler<AsyncResult<V>> resultHandler)` Get a value from the map, asynchronously.
    `void` | Counter.`getAndAdd(long value, Handler<AsyncResult<Long>> resultHandler)` Add the value to the counter atomically and return the value before the add
    `void` | Counter.`getAndIncrement(Handler<AsyncResult<Long>> resultHandler)` Increment the counter atomically and return the value before the increment.
    `<K,V> void` | SharedData.`getClusterWideMap(String name, Handler<AsyncResult<AsyncMap<K,V>>> resultHandler)` Get the cluster wide map with the specified name.
    `void` | SharedData.`getCounter(String name, Handler<AsyncResult<Counter>> resultHandler)` Get a cluster wide counter.
    `void` | SharedData.`getLock(String name, Handler<AsyncResult<Lock>> resultHandler)` Get a cluster wide lock with the specified name.
    `void` | SharedData.`getLockWithTimeout(String name, long timeout, Handler<AsyncResult<Lock>> resultHandler)` Like `SharedData.getLock(String, Handler)` but specifying a timeout.
    `void` | Counter.`incrementAndGet(Handler<AsyncResult<Long>> resultHandler)` Increment the counter atomically and return the new count
    `void` | AsyncMap.`put(K k, V v, Handler<AsyncResult<Void>> completionHandler)` Put a value in the map, asynchronously.
    `void` | AsyncMap.`put(K k, V v, long timeout, Handler<AsyncResult<Void>> completionHandler)` Like `AsyncMap.put(K, V, io.vertx.core.Handler<io.vertx.core.AsyncResult<java.lang.Void>>)` but specifying a timeout.
    `void` | AsyncMap.`putIfAbsent(K k, V v, Handler<AsyncResult<V>> completionHandler)` Put the entry only if there is no entry with the key already present.
    `void` | AsyncMap.`putIfAbsent(K k, V v, long timeout, Handler<AsyncResult<V>> completionHandler)` Link `AsyncMap.putIfAbsent(K, V, io.vertx.core.Handler<io.vertx.core.AsyncResult<V>>)` but specifying a timeout.
    `void` | AsyncMap.`remove(K k, Handler<AsyncResult<V>> resultHandler)` Remove a value from the map, asynchronously.
    `void` | AsyncMap.`removeIfPresent(K k, V v, Handler<AsyncResult<Boolean>> resultHandler)` Remove a value from the map, only if entry already exists with same value.
    `void` | AsyncMap.`replace(K k, V v, Handler<AsyncResult<V>> resultHandler)` Replace the entry only if it is currently mapped to some value
    `void` | AsyncMap.`replaceIfPresent(K k, V oldValue, V newValue, Handler<AsyncResult<Boolean>> resultHandler)` Replace the entry only if it is currently mapped to a specific value
    `void` | AsyncMap.`size(Handler<AsyncResult<Integer>> resultHandler)` Provide the number of entries in the map

  - ### Uses of AsyncResult in io.vertx.core.spi

    Method parameters in io.vertx.core.spi with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `void` | VertxFactory.`clusteredVertx(VertxOptions options, Handler<AsyncResult<Vertx>> resultHandler)`

  - ### Uses of AsyncResult in io.vertx.core.spi.cluster

    Method parameters in io.vertx.core.spi.cluster with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `void` | AsyncMultiMap.`add(K k, V v, Handler<AsyncResult<Void>> completionHandler)` Add a value to the list of values for that key in the map
    `void` | AsyncMultiMap.`get(K k, Handler<AsyncResult<ChoosableIterable<V>>> resultHandler)` Get a list of values from the map for the key
    `<K,V> void` | ClusterManager.`getAsyncMap(String name, Handler<AsyncResult<AsyncMap<K,V>>> resultHandler)` Return an async map for the given name
    `<K,V> void` | ClusterManager.`getAsyncMultiMap(String name, Handler<AsyncResult<AsyncMultiMap<K,V>>> resultHandler)` Return an async multi-map for the given name
    `void` | ClusterManager.`getCounter(String name, Handler<AsyncResult<Counter>> resultHandler)`
    `void` | ClusterManager.`getLockWithTimeout(String name, long timeout, Handler<AsyncResult<Lock>> resultHandler)`
    `void` | ClusterManager.`join(Handler<AsyncResult<Void>> resultHandler)` Join the cluster
    `void` | ClusterManager.`leave(Handler<AsyncResult<Void>> resultHandler)` Leave the cluster
    `void` | AsyncMultiMap.`remove(K k, V v, Handler<AsyncResult<Boolean>> completionHandler)` Remove a value from the list of values for that key in the map.
    `void` | AsyncMultiMap.`removeAllForValue(V v, Handler<AsyncResult<Void>> completionHandler)` Remove all the specified values from all keys in the map

  - ### Uses of AsyncResult in io.vertx.ext.auth

    Method parameters in io.vertx.ext.auth with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `void` | AuthProvider.`authenticate(JsonObject authInfo, Handler<AsyncResult<User>> resultHandler)` Authenticate a user.
    `protected abstract void` | AbstractUser.`doIsPermitted(String permission, Handler<AsyncResult<Boolean>> resultHandler)`
    `User` | AbstractUser.`isAuthorised(String authority, Handler<AsyncResult<Boolean>> resultHandler)`
    `User` | User.`isAuthorised(String authority, Handler<AsyncResult<Boolean>> resultHandler)` Is the user authorised to

  - ### Uses of AsyncResult in io.vertx.ext.jdbc

    Method parameters in io.vertx.ext.jdbc with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `JDBCClient` | JDBCClient.`getConnection(Handler<AsyncResult<io.vertx.ext.sql.SQLConnection>> handler)` Returns a connection that can be used to perform SQL operations on.

  - ### Uses of AsyncResult in io.vertx.ext.mail

    Method parameters in io.vertx.ext.mail with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `MailClient` | MailClient.`sendMail(MailMessage email, Handler<AsyncResult<MailResult>> resultHandler)` send a single mail via MailClient
    `MailService` | MailService.`sendMail(MailMessage email, Handler<AsyncResult<MailResult>> resultHandler)`
    `MailService` | MailServiceVertxEBProxy.`sendMail(MailMessage email, Handler<AsyncResult<MailResult>> resultHandler)`

  - ### Uses of AsyncResult in io.vertx.ext.mongo

    Method parameters in io.vertx.ext.mongo with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `MongoClient` | MongoClient.`count(String collection, JsonObject query, Handler<AsyncResult<Long>> resultHandler)` Count matching documents in a collection.
    `MongoClient` | MongoClient.`createCollection(String collectionName, Handler<AsyncResult<Void>> resultHandler)` Create a new collection
    `MongoClient` | MongoClient.`dropCollection(String collection, Handler<AsyncResult<Void>> resultHandler)` Drop a collection
    `MongoClient` | MongoClient.`find(String collection, JsonObject query, Handler<AsyncResult<List<JsonObject>>> resultHandler)` Find matching documents in the specified collection
    `MongoClient` | MongoClient.`findOne(String collection, JsonObject query, JsonObject fields, Handler<AsyncResult<JsonObject>> resultHandler)` Find a single matching document in the specified collection
    `MongoClient` | MongoClient.`findWithOptions(String collection, JsonObject query, FindOptions options, Handler<AsyncResult<List<JsonObject>>> resultHandler)` Find matching documents in the specified collection, specifying options
    `MongoClient` | MongoClient.`getCollections(Handler<AsyncResult<List<String>>> resultHandler)` Get a list of all collections in the database.
    `MongoClient` | MongoClient.`insert(String collection, JsonObject document, Handler<AsyncResult<String>> resultHandler)` Insert a document in the specified collection
    `MongoClient` | MongoClient.`insertWithOptions(String collection, JsonObject document, WriteOption writeOption, Handler<AsyncResult<String>> resultHandler)` Insert a document in the specified collection with the specified write option
    `MongoClient` | MongoClient.`remove(String collection, JsonObject query, Handler<AsyncResult<Void>> resultHandler)` Remove matching documents from a collection
    `MongoClient` | MongoClient.`removeOne(String collection, JsonObject query, Handler<AsyncResult<Void>> resultHandler)` Remove a single matching document from a collection
    `MongoClient` | MongoClient.`removeOneWithOptions(String collection, JsonObject query, WriteOption writeOption, Handler<AsyncResult<Void>> resultHandler)` Remove a single matching document from a collection with the specified write option
    `MongoClient` | MongoClient.`removeWithOptions(String collection, JsonObject query, WriteOption writeOption, Handler<AsyncResult<Void>> resultHandler)` Remove matching documents from a collection with the specified write option
    `MongoClient` | MongoClient.`replace(String collection, JsonObject query, JsonObject replace, Handler<AsyncResult<Void>> resultHandler)` Replace matching documents in the specified collection
    `MongoClient` | MongoClient.`replaceWithOptions(String collection, JsonObject query, JsonObject replace, UpdateOptions options, Handler<AsyncResult<Void>> resultHandler)` Replace matching documents in the specified collection, specifying options
    `MongoClient` | MongoClient.`runCommand(String commandName, JsonObject command, Handler<AsyncResult<JsonObject>> resultHandler)` Run an arbitrary MongoDB command.
    `MongoClient` | MongoClient.`save(String collection, JsonObject document, Handler<AsyncResult<String>> resultHandler)` Save a document in the specified collection
    `MongoClient` | MongoClient.`saveWithOptions(String collection, JsonObject document, WriteOption writeOption, Handler<AsyncResult<String>> resultHandler)` Save a document in the specified collection with the specified write option
    `MongoClient` | MongoClient.`update(String collection, JsonObject query, JsonObject update, Handler<AsyncResult<Void>> resultHandler)` Update matching documents in the specified collection
    `MongoClient` | MongoClient.`updateWithOptions(String collection, JsonObject query, JsonObject update, UpdateOptions options, Handler<AsyncResult<Void>> resultHandler)` Update matching documents in the specified collection, specifying options

  - ### Uses of AsyncResult in io.vertx.ext.unit

    Methods in io.vertx.ext.unit that return types with arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `<T> Handler<AsyncResult<T>>` | TestContext.`asyncAssertFailure()` Creates and returns a new async handler, the returned handler controls the completion of the test. When the returned handler is called back with a failed result it completes the async operation. When the returned handler is called back with a succeeded result it fails the test.
    `<T> Handler<AsyncResult<T>>` | TestContext.`asyncAssertFailure(Handler<Throwable> causeHandler)` Creates and returns a new async handler, the returned handler controls the completion of the test. When the returned handler is called back with a failed result it completes the async operation. When the returned handler is called back with a succeeded result it fails the test.
    `<T> Handler<AsyncResult<T>>` | TestContext.`asyncAssertSuccess()` Creates and returns a new async handler, the returned handler controls the completion of the test. When the returned handler is called back with a succeeded result it completes the async operation. When the returned handler is called back with a failed result it fails the test with the cause of the failure.
    `<T> Handler<AsyncResult<T>>` | TestContext.`asyncAssertSuccess(Handler<T> resultHandler)` Creates and returns a new async handler, the returned handler controls the completion of the test. When the returned handler is called back with a succeeded result it invokes the `resultHandler` argument with the async result.

    Method parameters in io.vertx.ext.unit with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `void` | TestCompletion.`handler(Handler<AsyncResult<Void>> completionHandler)` Completion handler for the end of the test, the result is successful when all test cases pass otherwise it is failed.

  - ### Uses of AsyncResult in io.vertx.ext.web.handler.sockjs

    Subinterfaces of AsyncResult in io.vertx.ext.web.handler.sockjs
    Modifier and Type | Interface and Description
    --- | ---
    `interface` | `BridgeEvent` Represents an event that occurs on the event bus bridge.

  - ### Uses of AsyncResult in io.vertx.ext.web.sstore

    Method parameters in io.vertx.ext.web.sstore with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `void` | SessionStore.`clear(Handler<AsyncResult<Boolean>> resultHandler)` Remove all sessions from the store
    `void` | SessionStore.`delete(String id, Handler<AsyncResult<Boolean>> resultHandler)` Delete the session with the specified ID
    `void` | SessionStore.`get(String id, Handler<AsyncResult<Session>> resultHandler)` Get the session with the specified ID
    `void` | SessionStore.`put(Session session, Handler<AsyncResult<Boolean>> resultHandler)` Add a session with the specified ID
    `void` | SessionStore.`size(Handler<AsyncResult<Integer>> resultHandler)` Get the number of sessions in the store

  - ### Uses of AsyncResult in io.vertx.ext.web.templ

    Method parameters in io.vertx.ext.web.templ with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `void` | TemplateEngine.`render(RoutingContext context, String templateFileName, Handler<AsyncResult<Buffer>> handler)` Render

  - ### Uses of AsyncResult in io.vertx.lang.rxjava

    Methods in io.vertx.lang.rxjava that return AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `static <V> AsyncResult<V>` | InternalHelper.`failure(Throwable t)`
    `static <V> AsyncResult<V>` | InternalHelper.`result(V value)`

    Methods in io.vertx.lang.rxjava that return types with arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `static <V> Handler<AsyncResult<V>>` | InternalHelper.`asyncResultHandler(CompletableFuture<V> f)`

  - ### Uses of AsyncResult in io.vertx.redis

    Method parameters in io.vertx.redis with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `RedisClient` | RedisClient.`append(String key, String value, Handler<AsyncResult<Long>> handler)` Append a value to a key
    `RedisClient` | RedisClient.`auth(String password, Handler<AsyncResult<String>> handler)` Authenticate to the server
    `RedisClient` | RedisClient.`bgrewriteaof(Handler<AsyncResult<String>> handler)` Asynchronously rewrite the append-only file
    `RedisClient` | RedisClient.`bgsave(Handler<AsyncResult<String>> handler)` Asynchronously save the dataset to disk
    `RedisClient` | RedisClient.`bitcount(String key, Handler<AsyncResult<Long>> handler)` Count set bits in a string
    `RedisClient` | RedisClient.`bitcountRange(String key, long start, long end, Handler<AsyncResult<Long>> handler)` Count set bits in a string
    `RedisClient` | RedisClient.`bitop(BitOperation operation, String destkey, List<String> keys, Handler<AsyncResult<Long>> handler)` Perform bitwise operations between strings
    `RedisClient` | RedisClient.`bitpos(String key, int bit, Handler<AsyncResult<Long>> handler)` Find first bit set or clear in a string
    `RedisClient` | RedisClient.`bitposFrom(String key, int bit, int start, Handler<AsyncResult<Long>> handler)` Find first bit set or clear in a string See also bitposRange() method, which takes start, and stop offset.
    `RedisClient` | RedisClient.`bitposRange(String key, int bit, int start, int stop, Handler<AsyncResult<Long>> handler)` Find first bit set or clear in a string Note: when both start, and stop offsets are specified, behaviour is slightly different than if only start is specified
    `RedisClient` | RedisClient.`blpop(String key, int seconds, Handler<AsyncResult<JsonArray>> handler)` Remove and get the first element in a list, or block until one is available
    `RedisClient` | RedisClient.`blpopMany(List<String> keys, int seconds, Handler<AsyncResult<JsonArray>> handler)` Remove and get the first element in any of the lists, or block until one is available
    `RedisClient` | RedisClient.`brpop(String key, int seconds, Handler<AsyncResult<JsonArray>> handler)` Remove and get the last element in a list, or block until one is available
    `RedisClient` | RedisClient.`brpoplpush(String key, String destkey, int seconds, Handler<AsyncResult<Void>> handler)` Pop a value from a list, push it to another list and return it; or block until one is available
    `RedisClient` | RedisClient.`brpopMany(List<String> keys, int seconds, Handler<AsyncResult<JsonArray>> handler)` Remove and get the last element in any of the lists, or block until one is available
    `RedisClient` | RedisClient.`clientGetname(Handler<AsyncResult<String>> handler)` Get the current connection name
    `RedisClient` | RedisClient.`clientKill(KillFilter filter, Handler<AsyncResult<Long>> handler)` Kill the connection of a client
    `RedisClient` | RedisClient.`clientList(Handler<AsyncResult<String>> handler)` Get the list of client connections
    `RedisClient` | RedisClient.`clientPause(long millis, Handler<AsyncResult<String>> handler)` Stop processing commands from clients for some time
    `RedisClient` | RedisClient.`clientSetname(String name, Handler<AsyncResult<String>> handler)` Set the current connection name
    `void` | RedisClient.`close(Handler<AsyncResult<Void>> handler)` Close the client - when it is fully closed the handler will be called.
    `RedisClient` | RedisClient.`clusterSlots(Handler<AsyncResult<JsonArray>> handler)` Get array of Cluster slot to node mappings
    `RedisClient` | RedisClient.`command(Handler<AsyncResult<JsonArray>> handler)` Get array of Redis command details
    `RedisClient` | RedisClient.`commandCount(Handler<AsyncResult<Long>> handler)` Get total number of Redis commands
    `RedisClient` | RedisClient.`commandGetkeys(Handler<AsyncResult<JsonArray>> handler)` Extract keys given a full Redis command
    `RedisClient` | RedisClient.`commandInfo(List<String> commands, Handler<AsyncResult<JsonArray>> handler)` Get array of specific Redis command details
    `RedisClient` | RedisClient.`configGet(String parameter, Handler<AsyncResult<JsonArray>> handler)` Get the value of a configuration parameter
    `RedisClient` | RedisClient.`configResetstat(Handler<AsyncResult<String>> handler)` Reset the stats returned by INFO
    `RedisClient` | RedisClient.`configRewrite(Handler<AsyncResult<String>> handler)` Rewrite the configuration file with the in memory configuration
    `RedisClient` | RedisClient.`configSet(String parameter, String value, Handler<AsyncResult<String>> handler)` Set a configuration parameter to the given value
    `RedisClient` | RedisClient.`dbsize(Handler<AsyncResult<Long>> handler)` Return the number of keys in the selected database
    `RedisClient` | RedisClient.`debugObject(String key, Handler<AsyncResult<String>> handler)` Get debugging information about a key
    `RedisClient` | RedisClient.`debugSegfault(Handler<AsyncResult<String>> handler)` Make the server crash
    `RedisClient` | RedisClient.`decr(String key, Handler<AsyncResult<Long>> handler)` Decrement the integer value of a key by one
    `RedisClient` | RedisClient.`decrby(String key, long decrement, Handler<AsyncResult<Long>> handler)` Decrement the integer value of a key by the given number
    `RedisClient` | RedisClient.`del(List<String> keys, Handler<AsyncResult<Long>> handler)` Delete a key
    `RedisClient` | RedisClient.`discard(Handler<AsyncResult<String>> handler)` Discard all commands issued after MULTI
    `RedisClient` | RedisClient.`dump(String key, Handler<AsyncResult<String>> handler)` Return a serialized version of the value stored at the specified key.
    `RedisClient` | RedisClient.`echo(String message, Handler<AsyncResult<String>> handler)` Echo the given string
    `RedisClient` | RedisClient.`eval(String script, List<String> keys, List<String> args, Handler<AsyncResult<Void>> handler)` Execute a Lua script server side
    `RedisClient` | RedisClient.`evalsha(String sha1, List<String> keys, List<String> values, Handler<AsyncResult<Void>> handler)` Execute a Lua script server side
    `RedisClient` | RedisClient.`exec(Handler<AsyncResult<Void>> handler)` Execute all commands issued after MULTI
    `RedisClient` | RedisClient.`exists(String key, Handler<AsyncResult<Long>> handler)` Determine if a key exists
    `RedisClient` | RedisClient.`expire(String key, int seconds, Handler<AsyncResult<Long>> handler)` Set a key's time to live in seconds
    `RedisClient` | RedisClient.`expireat(String key, long seconds, Handler<AsyncResult<Long>> handler)` Set the expiration for a key as a UNIX timestamp
    `RedisClient` | RedisClient.`flushall(Handler<AsyncResult<String>> handler)` Remove all keys from all databases
    `RedisClient` | RedisClient.`flushdb(Handler<AsyncResult<String>> handler)` Remove all keys from the current database
    `RedisClient` | RedisClient.`get(String key, Handler<AsyncResult<String>> handler)` Get the value of a key
    `RedisClient` | RedisClient.`getBinary(String key, Handler<AsyncResult<String>> handler)` Get the value of a key - without decoding as utf-8
    `RedisClient` | RedisClient.`getbit(String key, long offset, Handler<AsyncResult<Long>> handler)` Returns the bit value at offset in the string value stored at key
    `RedisClient` | RedisClient.`getrange(String key, long start, long end, Handler<AsyncResult<String>> handler)` Get a substring of the string stored at a key
    `RedisClient` | RedisClient.`getset(String key, String value, Handler<AsyncResult<String>> handler)` Set the string value of a key and return its old value
    `RedisClient` | RedisClient.`hdel(String key, String field, Handler<AsyncResult<Long>> handler)` Delete one or more hash fields
    `RedisClient` | RedisClient.`hdelMany(String key, List<String> fields, Handler<AsyncResult<Long>> handler)` Delete one or more hash fields
    `RedisClient` | RedisClient.`hexists(String key, String field, Handler<AsyncResult<Long>> handler)` Determine if a hash field exists
    `RedisClient` | RedisClient.`hget(String key, String field, Handler<AsyncResult<String>> handler)` Get the value of a hash field
    `RedisClient` | RedisClient.`hgetall(String key, Handler<AsyncResult<JsonObject>> handler)` Get all the fields and values in a hash
    `RedisClient` | RedisClient.`hincrby(String key, String field, long increment, Handler<AsyncResult<Long>> handler)` Increment the integer value of a hash field by the given number
    `RedisClient` | RedisClient.`hincrbyfloat(String key, String field, double increment, Handler<AsyncResult<String>> handler)` Increment the float value of a hash field by the given amount
    `RedisClient` | RedisClient.`hkeys(String key, Handler<AsyncResult<JsonArray>> handler)` Get all the fields in a hash
    `RedisClient` | RedisClient.`hlen(String key, Handler<AsyncResult<Long>> handler)` Get the number of fields in a hash
    `RedisClient` | RedisClient.`hmget(String key, List<String> fields, Handler<AsyncResult<JsonArray>> handler)` Get the values of all the given hash fields
    `RedisClient` | RedisClient.`hmset(String key, Map<String,String> values, Handler<AsyncResult<String>> handler)` Set multiple hash fields to multiple values
    `RedisClient` | RedisClient.`hscan(String key, String cursor, ScanOptions options, Handler<AsyncResult<JsonArray>> handler)` Incrementally iterate hash fields and associated values
    `RedisClient` | RedisClient.`hset(String key, String field, String value, Handler<AsyncResult<Long>> handler)` Set the string value of a hash field
    `RedisClient` | RedisClient.`hsetnx(String key, String field, String value, Handler<AsyncResult<Long>> handler)` Set the value of a hash field, only if the field does not exist
    `RedisClient` | RedisClient.`hvals(String key, Handler<AsyncResult<JsonArray>> handler)` Get all the values in a hash
    `RedisClient` | RedisClient.`incr(String key, Handler<AsyncResult<Long>> handler)` Increment the integer value of a key by one
    `RedisClient` | RedisClient.`incrby(String key, long increment, Handler<AsyncResult<Long>> handler)` Increment the integer value of a key by the given amount
    `RedisClient` | RedisClient.`incrbyfloat(String key, double increment, Handler<AsyncResult<String>> handler)` Increment the float value of a key by the given amount
    `RedisClient` | RedisClient.`info(Handler<AsyncResult<JsonObject>> handler)` Get information and statistics about the server
    `RedisClient` | RedisClient.`infoSection(String section, Handler<AsyncResult<JsonObject>> handler)` Get information and statistics about the server
    `RedisClient` | RedisClient.`keys(String pattern, Handler<AsyncResult<JsonArray>> handler)` Find all keys matching the given pattern
    `RedisClient` | RedisClient.`lastsave(Handler<AsyncResult<Long>> handler)` Get the UNIX time stamp of the last successful save to disk
    `RedisClient` | RedisClient.`lindex(String key, int index, Handler<AsyncResult<String>> handler)` Get an element from a list by its index
    `RedisClient` | RedisClient.`linsert(String key, InsertOptions option, String pivot, String value, Handler<AsyncResult<Long>> handler)` Insert an element before or after another element in a list
    `RedisClient` | RedisClient.`llen(String key, Handler<AsyncResult<Long>> handler)` Get the length of a list
    `RedisClient` | RedisClient.`lpop(String key, Handler<AsyncResult<String>> handler)` Remove and get the first element in a list
    `RedisClient` | RedisClient.`lpush(String key, String value, Handler<AsyncResult<Long>> handler)` Prepend one value to a list
    `RedisClient` | RedisClient.`lpushMany(String key, List<String> values, Handler<AsyncResult<Long>> handler)` Prepend one or multiple values to a list
    `RedisClient` | RedisClient.`lpushx(String key, String value, Handler<AsyncResult<Long>> handler)` Prepend a value to a list, only if the list exists
    `RedisClient` | RedisClient.`lrange(String key, long from, long to, Handler<AsyncResult<JsonArray>> handler)` Get a range of elements from a list
    `RedisClient` | RedisClient.`lrem(String key, long count, String value, Handler<AsyncResult<Long>> handler)` Remove elements from a list
    `RedisClient` | RedisClient.`lset(String key, long index, String value, Handler<AsyncResult<String>> handler)` Set the value of an element in a list by its index
    `RedisClient` | RedisClient.`ltrim(String key, long from, long to, Handler<AsyncResult<String>> handler)` Trim a list to the specified range
    `RedisClient` | RedisClient.`mget(String key, Handler<AsyncResult<JsonArray>> handler)` Get the value of the given key
    `RedisClient` | RedisClient.`mgetMany(List<String> keys, Handler<AsyncResult<JsonArray>> handler)` Get the values of all the given keys
    `RedisClient` | RedisClient.`migrate(String host, int port, String key, int destdb, long timeout, MigrateOptions options, Handler<AsyncResult<String>> handler)` Atomically transfer a key from a Redis instance to another one.
    `RedisClient` | RedisClient.`monitor(Handler<AsyncResult<Void>> handler)` Listen for all requests received by the server in real time
    `RedisClient` | RedisClient.`move(String key, int destdb, Handler<AsyncResult<Long>> handler)` Move a key to another database
    `RedisClient` | RedisClient.`mset(Map<String,String> keyvals, Handler<AsyncResult<String>> handler)` Set multiple keys to multiple values
    `RedisClient` | RedisClient.`msetnx(Map<String,String> keyvals, Handler<AsyncResult<Long>> handler)` Set multiple keys to multiple values, only if none of the keys exist
    `RedisClient` | RedisClient.`multi(Handler<AsyncResult<String>> handler)` Mark the start of a transaction block
    `RedisClient` | RedisClient.`object(String key, ObjectCmd cmd, Handler<AsyncResult<Void>> handler)` Inspect the internals of Redis objects
    `RedisClient` | RedisClient.`persist(String key, Handler<AsyncResult<Long>> handler)` Remove the expiration from a key
    `RedisClient` | RedisClient.`pexpire(String key, long millis, Handler<AsyncResult<Long>> handler)` Set a key's time to live in milliseconds
    `RedisClient` | RedisClient.`pexpireat(String key, long millis, Handler<AsyncResult<Long>> handler)` Set the expiration for a key as a UNIX timestamp specified in milliseconds
    `RedisClient` | RedisClient.`pfadd(String key, String element, Handler<AsyncResult<Long>> handler)` Adds the specified element to the specified HyperLogLog.
    `RedisClient` | RedisClient.`pfaddMany(String key, List<String> elements, Handler<AsyncResult<Long>> handler)` Adds the specified elements to the specified HyperLogLog.
    `RedisClient` | RedisClient.`pfcount(String key, Handler<AsyncResult<Long>> handler)` Return the approximated cardinality of the set observed by the HyperLogLog at key.
    `RedisClient` | RedisClient.`pfcountMany(List<String> keys, Handler<AsyncResult<Long>> handler)` Return the approximated cardinality of the set(s) observed by the HyperLogLog at key(s).
    `RedisClient` | RedisClient.`pfmerge(String destkey, List<String> keys, Handler<AsyncResult<String>> handler)` Merge N different HyperLogLogs into a single one.
    `RedisClient` | RedisClient.`ping(Handler<AsyncResult<String>> handler)` Ping the server
    `RedisClient` | RedisClient.`psetex(String key, long millis, String value, Handler<AsyncResult<Void>> handler)` Set the value and expiration in milliseconds of a key
    `RedisClient` | RedisClient.`psubscribe(String pattern, Handler<AsyncResult<Void>> handler)` Listen for messages published to channels matching the given pattern
    `RedisClient` | RedisClient.`psubscribeMany(List<String> patterns, Handler<AsyncResult<Void>> handler)` Listen for messages published to channels matching the given patterns
    `RedisClient` | RedisClient.`pttl(String key, Handler<AsyncResult<Long>> handler)` Get the time to live for a key in milliseconds
    `RedisClient` | RedisClient.`publish(String channel, String message, Handler<AsyncResult<Long>> handler)` Post a message to a channel
    `RedisClient` | RedisClient.`pubsubChannels(String pattern, Handler<AsyncResult<JsonArray>> handler)` Lists the currently active channels - only those matching the pattern
    `RedisClient` | RedisClient.`pubsubNumpat(Handler<AsyncResult<Long>> handler)` Returns the number of subscriptions to patterns (that are performed using the PSUBSCRIBE command)
    `RedisClient` | RedisClient.`pubsubNumsub(List<String> channels, Handler<AsyncResult<JsonArray>> handler)` Returns the number of subscribers (not counting clients subscribed to patterns) for the specified channels
    `RedisClient` | RedisClient.`punsubscribe(List<String> patterns, Handler<AsyncResult<Void>> handler)` Stop listening for messages posted to channels matching the given patterns
    `RedisClient` | RedisClient.`randomkey(Handler<AsyncResult<String>> handler)` Return a random key from the keyspace
    `RedisClient` | RedisClient.`rename(String key, String newkey, Handler<AsyncResult<String>> handler)` Rename a key
    `RedisClient` | RedisClient.`renamenx(String key, String newkey, Handler<AsyncResult<Long>> handler)` Rename a key, only if the new key does not exist
    `RedisClient` | RedisClient.`restore(String key, long millis, String serialized, Handler<AsyncResult<String>> handler)` Create a key using the provided serialized value, previously obtained using DUMP.
    `RedisClient` | RedisClient.`role(Handler<AsyncResult<JsonArray>> handler)` Return the role of the instance in the context of replication
    `RedisClient` | RedisClient.`rpop(String key, Handler<AsyncResult<String>> handler)` Remove and get the last element in a list
    `RedisClient` | RedisClient.`rpoplpush(String key, String destkey, Handler<AsyncResult<String>> handler)` Remove the last element in a list, append it to another list and return it
    `RedisClient` | RedisClient.`rpush(String key, String value, Handler<AsyncResult<Long>> handler)` Append one or multiple values to a list
    `RedisClient` | RedisClient.`rpushMany(String key, List<String> values, Handler<AsyncResult<Long>> handler)` Append one or multiple values to a list
    `RedisClient` | RedisClient.`rpushx(String key, String value, Handler<AsyncResult<Long>> handler)` Append a value to a list, only if the list exists
    `RedisClient` | RedisClient.`sadd(String key, String member, Handler<AsyncResult<Long>> handler)` Add a member to a set
    `RedisClient` | RedisClient.`saddMany(String key, List<String> members, Handler<AsyncResult<Long>> handler)` Add one or more members to a set
    `RedisClient` | RedisClient.`save(Handler<AsyncResult<String>> handler)` Synchronously save the dataset to disk
    `RedisClient` | RedisClient.`scan(String cursor, ScanOptions options, Handler<AsyncResult<Void>> handler)` Incrementally iterate the keys space
    `RedisClient` | RedisClient.`scard(String key, Handler<AsyncResult<Long>> handler)` Get the number of members in a set
    `RedisClient` | RedisClient.`scriptExists(String script, Handler<AsyncResult<JsonArray>> handler)` Check existence of script in the script cache.
    `RedisClient` | RedisClient.`scriptExistsMany(List<String> scripts, Handler<AsyncResult<JsonArray>> handler)` Check existence of scripts in the script cache.
    `RedisClient` | RedisClient.`scriptFlush(Handler<AsyncResult<String>> handler)` Remove all the scripts from the script cache.
    `RedisClient` | RedisClient.`scriptKill(Handler<AsyncResult<String>> handler)` Kill the script currently in execution.
    `RedisClient` | RedisClient.`scriptLoad(String script, Handler<AsyncResult<String>> handler)` Load the specified Lua script into the script cache.
    `RedisClient` | RedisClient.`sdiff(String key, List<String> cmpkeys, Handler<AsyncResult<JsonArray>> handler)` Subtract multiple sets
    `RedisClient` | RedisClient.`sdiffstore(String destkey, String key, List<String> cmpkeys, Handler<AsyncResult<Long>> handler)` Subtract multiple sets and store the resulting set in a key
    `RedisClient` | RedisClient.`select(int dbindex, Handler<AsyncResult<String>> handler)` Change the selected database for the current connection
    `RedisClient` | RedisClient.`set(String key, String value, Handler<AsyncResult<Void>> handler)` Set the string value of a key
    `RedisClient` | RedisClient.`setBinary(String key, String value, Handler<AsyncResult<Void>> handler)` Set the binary string value of a key - without encoding as utf-8
    `RedisClient` | RedisClient.`setbit(String key, long offset, int bit, Handler<AsyncResult<Long>> handler)` Sets or clears the bit at offset in the string value stored at key
    `RedisClient` | RedisClient.`setex(String key, long seconds, String value, Handler<AsyncResult<String>> handler)` Set the value and expiration of a key
    `RedisClient` | RedisClient.`setnx(String key, String value, Handler<AsyncResult<Long>> handler)` Set the value of a key, only if the key does not exist
    `RedisClient` | RedisClient.`setrange(String key, int offset, String value, Handler<AsyncResult<Long>> handler)` Overwrite part of a string at key starting at the specified offset
    `RedisClient` | RedisClient.`setWithOptions(String key, String value, SetOptions options, Handler<AsyncResult<Void>> handler)` Set the string value of a key
    `RedisClient` | RedisClient.`sinter(List<String> keys, Handler<AsyncResult<JsonArray>> handler)` Intersect multiple sets
    `RedisClient` | RedisClient.`sinterstore(String destkey, List<String> keys, Handler<AsyncResult<Long>> handler)` Intersect multiple sets and store the resulting set in a key
    `RedisClient` | RedisClient.`sismember(String key, String member, Handler<AsyncResult<Long>> handler)` Determine if a given value is a member of a set
    `RedisClient` | RedisClient.`slaveof(String host, int port, Handler<AsyncResult<String>> handler)` Make the server a slave of another instance
    `RedisClient` | RedisClient.`slaveofNoone(Handler<AsyncResult<String>> handler)` Make this server a master
    `RedisClient` | RedisClient.`slowlogGet(int limit, Handler<AsyncResult<JsonArray>> handler)` Read the Redis slow queries log
    `RedisClient` | RedisClient.`slowlogLen(Handler<AsyncResult<Long>> handler)` Get the length of the Redis slow queries log
    `RedisClient` | RedisClient.`slowlogReset(Handler<AsyncResult<Void>> handler)` Reset the Redis slow queries log
    `RedisClient` | RedisClient.`smembers(String key, Handler<AsyncResult<JsonArray>> handler)` Get all the members in a set
    `RedisClient` | RedisClient.`smove(String key, String destkey, String member, Handler<AsyncResult<Long>> handler)` Move a member from one set to another
    `RedisClient` | RedisClient.`sort(String key, SortOptions options, Handler<AsyncResult<JsonArray>> handler)` Sort the elements in a list, set or sorted set
    `RedisClient` | RedisClient.`spop(String key, Handler<AsyncResult<String>> handler)` Remove and return a random member from a set
    `RedisClient` | RedisClient.`spopMany(String key, int count, Handler<AsyncResult<String>> handler)` Remove and return random members from a set
    `RedisClient` | RedisClient.`srandmember(String key, int count, Handler<AsyncResult<JsonArray>> handler)` Get one or multiple random members from a set
    `RedisClient` | RedisClient.`srem(String key, String member, Handler<AsyncResult<Long>> handler)` Remove one member from a set
    `RedisClient` | RedisClient.`sremMany(String key, List<String> members, Handler<AsyncResult<Long>> handler)` Remove one or more members from a set
    `RedisClient` | RedisClient.`sscan(String key, String cursor, ScanOptions options, Handler<AsyncResult<Void>> handler)` Incrementally iterate Set elements
    `RedisClient` | RedisClient.`strlen(String key, Handler<AsyncResult<Long>> handler)` Get the length of the value stored in a key
    `RedisClient` | RedisClient.`subscribe(List<String> channels, Handler<AsyncResult<Void>> handler)` Listen for messages published to the given channels
    `RedisClient` | RedisClient.`sunion(List<String> keys, Handler<AsyncResult<JsonArray>> handler)` Add multiple sets
    `RedisClient` | RedisClient.`sunionstore(String destkey, List<String> keys, Handler<AsyncResult<Long>> handler)` Add multiple sets and store the resulting set in a key
    `RedisClient` | RedisClient.`sync(Handler<AsyncResult<Void>> handler)` Internal command used for replication
    `RedisClient` | RedisClient.`time(Handler<AsyncResult<JsonArray>> handler)` Return the current server time
    `RedisClient` | RedisClient.`ttl(String key, Handler<AsyncResult<Long>> handler)` Get the time to live for a key
    `RedisClient` | RedisClient.`type(String key, Handler<AsyncResult<String>> handler)` Determine the type stored at key
    `RedisClient` | RedisClient.`unsubscribe(List<String> channels, Handler<AsyncResult<Void>> handler)` Stop listening for messages posted to the given channels
    `RedisClient` | RedisClient.`unwatch(Handler<AsyncResult<String>> handler)` Forget about all watched keys
    `RedisClient` | RedisClient.`watch(List<String> keys, Handler<AsyncResult<String>> handler)` Watch the given keys to determine execution of the MULTI/EXEC block
    `RedisClient` | RedisClient.`zadd(String key, double score, String member, Handler<AsyncResult<Long>> handler)` Add one or more members to a sorted set, or update its score if it already exists
    `RedisClient` | RedisClient.`zaddMany(String key, Map<String,Double> members, Handler<AsyncResult<Long>> handler)` Add one or more members to a sorted set, or update its score if it already exists
    `RedisClient` | RedisClient.`zcard(String key, Handler<AsyncResult<Long>> handler)` Get the number of members in a sorted set
    `RedisClient` | RedisClient.`zcount(String key, double min, double max, Handler<AsyncResult<Long>> handler)` Count the members in a sorted set with scores within the given values
    `RedisClient` | RedisClient.`zincrby(String key, double increment, String member, Handler<AsyncResult<String>> handler)` Increment the score of a member in a sorted set
    `RedisClient` | RedisClient.`zinterstore(String destkey, List<String> sets, AggregateOptions options, Handler<AsyncResult<Long>> handler)` Intersect multiple sorted sets and store the resulting sorted set in a new key
    `RedisClient` | RedisClient.`zinterstoreWeighed(String destkey, Map<String,Double> sets, AggregateOptions options, Handler<AsyncResult<Long>> handler)` Intersect multiple sorted sets and store the resulting sorted set in a new key using weights for scoring
    `RedisClient` | RedisClient.`zlexcount(String key, String min, String max, Handler<AsyncResult<Long>> handler)` Count the number of members in a sorted set between a given lexicographical range
    `RedisClient` | RedisClient.`zrange(String key, long start, long stop, Handler<AsyncResult<JsonArray>> handler)` Return a range of members in a sorted set, by index
    `RedisClient` | RedisClient.`zrangebylex(String key, String min, String max, LimitOptions options, Handler<AsyncResult<JsonArray>> handler)` Return a range of members in a sorted set, by lexicographical range
    `RedisClient` | RedisClient.`zrangebyscore(String key, String min, String max, RangeLimitOptions options, Handler<AsyncResult<JsonArray>> handler)` Return a range of members in a sorted set, by score
    `RedisClient` | RedisClient.`zrangeWithOptions(String key, long start, long stop, RangeOptions options, Handler<AsyncResult<JsonArray>> handler)` Return a range of members in a sorted set, by index
    `RedisClient` | RedisClient.`zrank(String key, String member, Handler<AsyncResult<Long>> handler)` Determine the index of a member in a sorted set
    `RedisClient` | RedisClient.`zrem(String key, String member, Handler<AsyncResult<Long>> handler)` Remove one member from a sorted set
    `RedisClient` | RedisClient.`zremMany(String key, List<String> members, Handler<AsyncResult<Long>> handler)` Remove one or more members from a sorted set
    `RedisClient` | RedisClient.`zremrangebylex(String key, String min, String max, Handler<AsyncResult<Long>> handler)` Remove all members in a sorted set between the given lexicographical range
    `RedisClient` | RedisClient.`zremrangebyrank(String key, long start, long stop, Handler<AsyncResult<Long>> handler)` Remove all members in a sorted set within the given indexes
    `RedisClient` | RedisClient.`zremrangebyscore(String key, String min, String max, Handler<AsyncResult<Long>> handler)` Remove all members in a sorted set within the given scores
    `RedisClient` | RedisClient.`zrevrange(String key, long start, long stop, RangeOptions options, Handler<AsyncResult<JsonArray>> handler)` Return a range of members in a sorted set, by index, with scores ordered from high to low
    `RedisClient` | RedisClient.`zrevrangebylex(String key, String max, String min, LimitOptions options, Handler<AsyncResult<JsonArray>> handler)` Return a range of members in a sorted set, by score, between the given lexicographical range with scores ordered from high to low
    `RedisClient` | RedisClient.`zrevrangebyscore(String key, String max, String min, RangeLimitOptions options, Handler<AsyncResult<JsonArray>> handler)` Return a range of members in a sorted set, by score, with scores ordered from high to low
    `RedisClient` | RedisClient.`zrevrank(String key, String member, Handler<AsyncResult<Long>> handler)` Determine the index of a member in a sorted set, with scores ordered from high to low
    `RedisClient` | RedisClient.`zscan(String key, String cursor, ScanOptions options, Handler<AsyncResult<Void>> handler)` Incrementally iterate sorted sets elements and associated scores
    `RedisClient` | RedisClient.`zscore(String key, String member, Handler<AsyncResult<String>> handler)` Get the score associated with the given member in a sorted set
    `RedisClient` | RedisClient.`zunionstore(String destkey, List<String> sets, AggregateOptions options, Handler<AsyncResult<Long>> handler)` Add multiple sorted sets and store the resulting sorted set in a new key
    `RedisClient` | RedisClient.`zunionstoreWeighed(String key, Map<String,Double> sets, AggregateOptions options, Handler<AsyncResult<Long>> handler)` Add multiple sorted sets using weights, and store the resulting sorted set in a new key

  - ### Uses of AsyncResult in io.vertx.rx.java

    Methods in io.vertx.rx.java that return types with arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `static <T> Handler<AsyncResult<T>>` | RxHelper.`toFuture(rx.functions.Action1<T> onNext)` Adapt an item callback as a `Handler<AsyncResult<T>>`.
    `static <T> Handler<AsyncResult<T>>` | RxHelper.`toFuture(rx.functions.Action1<T> onNext, rx.functions.Action1<Throwable> onError)` Adapt an item callback and an error callback as a `Handler<AsyncResult<T>>`.
    `static <T> Handler<AsyncResult<T>>` | RxHelper.`toFuture(rx.functions.Action1<T> onNext, rx.functions.Action1<Throwable> onError, rx.functions.Action0 onComplete)` Adapt an item callback and an error callback as a `Handler<AsyncResult<T>>`.
    `static <T> Handler<AsyncResult<T>>` | RxHelper.`toFuture(rx.Observer<T> observer)` Adapt a `Subscriber` as a `Handler<AsyncResult<T>>;`.
    `Handler<AsyncResult<T>>` | ObservableFuture.`toHandler()`

  - ### Uses of AsyncResult in io.vertx.rxjava.core

    Method parameters in io.vertx.rxjava.core with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `void` | Vertx.`close(Handler<AsyncResult<Void>> completionHandler)` Like `Vertx` but the completionHandler will be called when the close is complete
    `static void` | Vertx.`clusteredVertx(VertxOptions options, Handler<AsyncResult<Vertx>> resultHandler)` Creates a clustered instance using the specified options.
    `void` | Vertx.`deployVerticle(String name, DeploymentOptions options, Handler<AsyncResult<String>> completionHandler)` Like `Vertx` but `DeploymentOptions` are provided to configure the deployment.
    `void` | Vertx.`deployVerticle(String name, Handler<AsyncResult<String>> completionHandler)` Like `Vertx` but the completionHandler will be notified when the deployment is complete.
    `<T> void` | Vertx.`executeBlocking(Handler<Future<T>> blockingCodeHandler, boolean ordered, Handler<AsyncResult<T>> resultHandler)` Safely execute some blocking code.
    `<T> void` | Vertx.`executeBlocking(Handler<Future<T>> blockingCodeHandler, Handler<AsyncResult<T>> resultHandler)` Like `Vertx` called with ordered = true.
    `void` | Future.`setHandler(Handler<AsyncResult<T>> handler)` Set a handler for the result.
    `void` | Vertx.`undeploy(String deploymentID, Handler<AsyncResult<Void>> completionHandler)` Like `Vertx` but the completionHandler will be notified when the undeployment is complete.

  - ### Uses of AsyncResult in io.vertx.rxjava.core.datagram

    Method parameters in io.vertx.rxjava.core.datagram with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `DatagramSocket` | DatagramSocket.`blockMulticastGroup(String multicastAddress, String sourceToBlock, Handler<AsyncResult<DatagramSocket>> handler)` Block the given address for the given multicast address and notifies the once the operation completes.
    `DatagramSocket` | DatagramSocket.`blockMulticastGroup(String multicastAddress, String networkInterface, String sourceToBlock, Handler<AsyncResult<DatagramSocket>> handler)` Block the given address for the given multicast address on the given network interface and notifies the once the operation completes.
    `void` | DatagramSocket.`close(Handler<AsyncResult<Void>> handler)` Closes the `DatagramSocket` implementation asynchronous and notifies the handler once done.
    `DatagramSocket` | DatagramSocket.`listen(int port, String host, Handler<AsyncResult<DatagramSocket>> handler)` Start listening on the given port and host.
    `DatagramSocket` | DatagramSocket.`listenMulticastGroup(String multicastAddress, Handler<AsyncResult<DatagramSocket>> handler)` Joins a multicast group and listens for packets send to it.
    `DatagramSocket` | DatagramSocket.`listenMulticastGroup(String multicastAddress, String networkInterface, String source, Handler<AsyncResult<DatagramSocket>> handler)` Joins a multicast group and listens for packets send to it on the given network interface.
    `DatagramSocket` | DatagramSocket.`send(Buffer packet, int port, String host, Handler<AsyncResult<DatagramSocket>> handler)` Write the given `Buffer` to the `SocketAddress`.
    `DatagramSocket` | DatagramSocket.`send(String str, int port, String host, Handler<AsyncResult<DatagramSocket>> handler)` Write the given `String` to the `SocketAddress` using UTF8 encoding.
    `DatagramSocket` | DatagramSocket.`send(String str, String enc, int port, String host, Handler<AsyncResult<DatagramSocket>> handler)` Write the given `String` to the `SocketAddress` using the given encoding.
    `DatagramSocket` | DatagramSocket.`unlistenMulticastGroup(String multicastAddress, Handler<AsyncResult<DatagramSocket>> handler)` Leaves a multicast group and stops listening for packets send to it.
    `DatagramSocket` | DatagramSocket.`unlistenMulticastGroup(String multicastAddress, String networkInterface, String source, Handler<AsyncResult<DatagramSocket>> handler)` Leaves a multicast group and stops listening for packets send to it on the given network interface.

  - ### Uses of AsyncResult in io.vertx.rxjava.core.dns

    Method parameters in io.vertx.rxjava.core.dns with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `DnsClient` | DnsClient.`lookup(String name, Handler<AsyncResult<String>> handler)` Try to lookup the A (ipv4) or AAAA (ipv6) record for the given name.
    `DnsClient` | DnsClient.`lookup4(String name, Handler<AsyncResult<String>> handler)` Try to lookup the A (ipv4) record for the given name.
    `DnsClient` | DnsClient.`lookup6(String name, Handler<AsyncResult<String>> handler)` Try to lookup the AAAA (ipv6) record for the given name.
    `DnsClient` | DnsClient.`resolveA(String name, Handler<AsyncResult<List<String>>> handler)` Try to resolve all A (ipv4) records for the given name.
    `DnsClient` | DnsClient.`resolveAAAA(String name, Handler<AsyncResult<List<String>>> handler)` Try to resolve all AAAA (ipv6) records for the given name.
    `DnsClient` | DnsClient.`resolveCNAME(String name, Handler<AsyncResult<List<String>>> handler)` Try to resolve the CNAME record for the given name.
    `DnsClient` | DnsClient.`resolveMX(String name, Handler<AsyncResult<List<MxRecord>>> handler)` Try to resolve the MX records for the given name.
    `DnsClient` | DnsClient.`resolveNS(String name, Handler<AsyncResult<List<String>>> handler)` Try to resolve the NS records for the given name.
    `DnsClient` | DnsClient.`resolvePTR(String name, Handler<AsyncResult<String>> handler)` Try to resolve the PTR record for the given name.
    `DnsClient` | DnsClient.`resolveSRV(String name, Handler<AsyncResult<List<SrvRecord>>> handler)` Try to resolve the SRV records for the given name.
    `DnsClient` | DnsClient.`resolveTXT(String name, Handler<AsyncResult<List<String>>> handler)` Try to resolve the TXT records for the given name.
    `DnsClient` | DnsClient.`reverseLookup(String ipaddress, Handler<AsyncResult<String>> handler)` Try to do a reverse lookup of an IP address.

  - ### Uses of AsyncResult in io.vertx.rxjava.core.eventbus

    Method parameters in io.vertx.rxjava.core.eventbus with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `void` | EventBus.`close(Handler<AsyncResult<Void>> completionHandler)` Close the event bus and release any resources held
    `void` | MessageConsumer.`completionHandler(Handler<AsyncResult<Void>> completionHandler)` Optional method which can be called to indicate when the registration has been propagated across the cluster.
    `<R> void` | Message.`reply(Object message, DeliveryOptions options, Handler<AsyncResult<Message<R>>> replyHandler)` The same as `reply(R message, DeliveryOptions)` but you can specify handler for the reply - i.e.
    `<R> void` | Message.`reply(Object message, Handler<AsyncResult<Message<R>>> replyHandler)` The same as `reply(R message)` but you can specify handler for the reply - i.e.
    `<T> EventBus` | EventBus.`send(String address, Object message, DeliveryOptions options, Handler<AsyncResult<Message<T>>> replyHandler)` Like `EventBus.send(java.lang.String, java.lang.Object)` but specifying a `replyHandler` that will be called if the recipient subsequently replies to the message.
    `<T> EventBus` | EventBus.`send(String address, Object message, Handler<AsyncResult<Message<T>>> replyHandler)` Like `EventBus.send(java.lang.String, java.lang.Object)` but specifying a `replyHandler` that will be called if the recipient subsequently replies to the message.
    `void` | MessageConsumer.`unregister(Handler<AsyncResult<Void>> completionHandler)` Unregisters the handler which created this registration

  - ### Uses of AsyncResult in io.vertx.rxjava.core.file

    Method parameters in io.vertx.rxjava.core.file with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `FileSystem` | FileSystem.`chmod(String path, String perms, Handler<AsyncResult<Void>> handler)` Change the permissions on the file represented by `path` to `perms`, asynchronously.
    `FileSystem` | FileSystem.`chmodRecursive(String path, String perms, String dirPerms, Handler<AsyncResult<Void>> handler)` Change the permissions on the file represented by `path` to `perms`, asynchronously.
    `FileSystem` | FileSystem.`chown(String path, String user, String group, Handler<AsyncResult<Void>> handler)` Change the ownership on the file represented by `path` to `user` and {code group}, asynchronously.
    `void` | AsyncFile.`close(Handler<AsyncResult<Void>> handler)` Close the file.
    `FileSystem` | FileSystem.`copy(String from, String to, Handler<AsyncResult<Void>> handler)` Copy a file from the path `from` to path `to`, asynchronously.
    `FileSystem` | FileSystem.`copyRecursive(String from, String to, boolean recursive, Handler<AsyncResult<Void>> handler)` Copy a file from the path `from` to path `to`, asynchronously.
    `FileSystem` | FileSystem.`createFile(String path, Handler<AsyncResult<Void>> handler)` Creates an empty file with the specified `path`, asynchronously.
    `FileSystem` | FileSystem.`createFile(String path, String perms, Handler<AsyncResult<Void>> handler)` Creates an empty file with the specified `path` and permissions `perms`, asynchronously.
    `FileSystem` | FileSystem.`delete(String path, Handler<AsyncResult<Void>> handler)` Deletes the file represented by the specified `path`, asynchronously.
    `FileSystem` | FileSystem.`deleteRecursive(String path, boolean recursive, Handler<AsyncResult<Void>> handler)` Deletes the file represented by the specified `path`, asynchronously.
    `FileSystem` | FileSystem.`exists(String path, Handler<AsyncResult<Boolean>> handler)` Determines whether the file as specified by the path `path` exists, asynchronously.
    `AsyncFile` | AsyncFile.`flush(Handler<AsyncResult<Void>> handler)` Same as `AsyncFile.flush()` but the handler will be called when the flush is complete or if an error occurs
    `FileSystem` | FileSystem.`fsProps(String path, Handler<AsyncResult<FileSystemProps>> handler)` Returns properties of the file-system being used by the specified `path`, asynchronously.
    `FileSystem` | FileSystem.`link(String link, String existing, Handler<AsyncResult<Void>> handler)` Create a hard link on the file system from `link` to `existing`, asynchronously.
    `FileSystem` | FileSystem.`lprops(String path, Handler<AsyncResult<FileProps>> handler)` Obtain properties for the link represented by `path`, asynchronously.
    `FileSystem` | FileSystem.`mkdir(String path, Handler<AsyncResult<Void>> handler)` Create the directory represented by `path`, asynchronously.
    `FileSystem` | FileSystem.`mkdir(String path, String perms, Handler<AsyncResult<Void>> handler)` Create the directory represented by `path`, asynchronously.
    `FileSystem` | FileSystem.`mkdirs(String path, Handler<AsyncResult<Void>> handler)` Create the directory represented by `path` and any non existent parents, asynchronously.
    `FileSystem` | FileSystem.`mkdirs(String path, String perms, Handler<AsyncResult<Void>> handler)` Create the directory represented by `path` and any non existent parents, asynchronously.
    `FileSystem` | FileSystem.`move(String from, String to, Handler<AsyncResult<Void>> handler)` Move a file from the path `from` to path `to`, asynchronously.
    `FileSystem` | FileSystem.`open(String path, OpenOptions options, Handler<AsyncResult<AsyncFile>> handler)` Open the file represented by `path`, asynchronously.
    `FileSystem` | FileSystem.`props(String path, Handler<AsyncResult<FileProps>> handler)` Obtain properties for the file represented by `path`, asynchronously.
    `AsyncFile` | AsyncFile.`read(Buffer buffer, int offset, long position, int length, Handler<AsyncResult<Buffer>> handler)` Reads `length` bytes of data from the file at position `position` in the file, asynchronously.
    `FileSystem` | FileSystem.`readDir(String path, Handler<AsyncResult<List<String>>> handler)` Read the contents of the directory specified by `path`, asynchronously.
    `FileSystem` | FileSystem.`readDir(String path, String filter, Handler<AsyncResult<List<String>>> handler)` Read the contents of the directory specified by `path`, asynchronously.
    `FileSystem` | FileSystem.`readFile(String path, Handler<AsyncResult<Buffer>> handler)` Reads the entire file as represented by the path `path` as a , asynchronously.
    `FileSystem` | FileSystem.`readSymlink(String link, Handler<AsyncResult<String>> handler)` Returns the path representing the file that the symbolic link specified by `link` points to, asynchronously.
    `FileSystem` | FileSystem.`symlink(String link, String existing, Handler<AsyncResult<Void>> handler)` Create a symbolic link on the file system from `link` to `existing`, asynchronously.
    `FileSystem` | FileSystem.`truncate(String path, long len, Handler<AsyncResult<Void>> handler)` Truncate the file represented by `path` to length `len` in bytes, asynchronously.
    `FileSystem` | FileSystem.`unlink(String link, Handler<AsyncResult<Void>> handler)` Unlinks the link on the file system represented by the path `link`, asynchronously.
    `AsyncFile` | AsyncFile.`write(Buffer buffer, long position, Handler<AsyncResult<Void>> handler)` Write a `Buffer` to the file at position `position` in the file, asynchronously.
    `FileSystem` | FileSystem.`writeFile(String path, Buffer data, Handler<AsyncResult<Void>> handler)` Creates the file, and writes the specified `Buffer data` to the file represented by the path `path`, asynchronously.

  - ### Uses of AsyncResult in io.vertx.rxjava.core.http

    Method parameters in io.vertx.rxjava.core.http with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `void` | HttpServer.`close(Handler<AsyncResult<Void>> completionHandler)` Like `HttpServer` but supplying a handler that will be called when the server is actually closed (or has failed).
    `HttpServer` | HttpServer.`listen(Handler<AsyncResult<HttpServer>> listenHandler)` Like `HttpServer` but supplying a handler that will be called when the server is actually listening (or has failed).
    `HttpServer` | HttpServer.`listen(int port, Handler<AsyncResult<HttpServer>> listenHandler)` Like `HttpServer.listen()` but supplying a handler that will be called when the server is actually listening (or has failed).
    `HttpServer` | HttpServer.`listen(int port, String host, Handler<AsyncResult<HttpServer>> listenHandler)` Like `HttpServer.listen()` but supplying a handler that will be called when the server is actually listening (or has failed).
    `HttpServerResponse` | HttpServerResponse.`sendFile(String filename, Handler<AsyncResult<Void>> resultHandler)` Like `HttpServerResponse.sendFile(java.lang.String)` but providing a handler which will be notified once the file has been completely written to the wire.

  - ### Uses of AsyncResult in io.vertx.rxjava.core.net

    Method parameters in io.vertx.rxjava.core.net with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `void` | NetServer.`close(Handler<AsyncResult<Void>> completionHandler)` Like `NetServer` but supplying a handler that will be notified when close is complete.
    `NetClient` | NetClient.`connect(int port, String host, Handler<AsyncResult<NetSocket>> connectHandler)` Open a connection to a server at the specific `port` and `host`.
    `NetServer` | NetServer.`listen(Handler<AsyncResult<NetServer>> listenHandler)` Like `NetServer.listen()` but providing a handler that will be notified when the server is listening, or fails.
    `NetServer` | NetServer.`listen(int port, Handler<AsyncResult<NetServer>> listenHandler)` Like `NetServer.listen()` but providing a handler that will be notified when the server is listening, or fails.
    `NetServer` | NetServer.`listen(int port, String host, Handler<AsyncResult<NetServer>> listenHandler)` Like `NetServer.listen()` but providing a handler that will be notified when the server is listening, or fails.
    `NetSocket` | NetSocket.`sendFile(String filename, Handler<AsyncResult<Void>> resultHandler)` Same as `NetSocket.sendFile(java.lang.String)` but also takes a handler that will be called when the send has completed or a failure has occurred

  - ### Uses of AsyncResult in io.vertx.rxjava.core.shareddata

    Method parameters in io.vertx.rxjava.core.shareddata with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `void` | Counter.`addAndGet(long value, Handler<AsyncResult<Long>> resultHandler)` Add the value to the counter atomically and return the new count
    `void` | AsyncMap.`clear(Handler<AsyncResult<Void>> resultHandler)` Clear all entries in the map
    `void` | Counter.`compareAndSet(long expected, long value, Handler<AsyncResult<Boolean>> resultHandler)` Set the counter to the specified value only if the current value is the expectec value.
    `void` | Counter.`decrementAndGet(Handler<AsyncResult<Long>> resultHandler)` Decrement the counter atomically and return the new count
    `void` | Counter.`get(Handler<AsyncResult<Long>> resultHandler)` Get the current value of the counter
    `void` | AsyncMap.`get(K k, Handler<AsyncResult<V>> resultHandler)` Get a value from the map, asynchronously.
    `void` | Counter.`getAndAdd(long value, Handler<AsyncResult<Long>> resultHandler)` Add the value to the counter atomically and return the value before the add
    `void` | Counter.`getAndIncrement(Handler<AsyncResult<Long>> resultHandler)` Increment the counter atomically and return the value before the increment.
    `<K,V> void` | SharedData.`getClusterWideMap(String name, Handler<AsyncResult<AsyncMap<K,V>>> resultHandler)` Get the cluster wide map with the specified name.
    `void` | SharedData.`getCounter(String name, Handler<AsyncResult<Counter>> resultHandler)` Get a cluster wide counter.
    `void` | SharedData.`getLock(String name, Handler<AsyncResult<Lock>> resultHandler)` Get a cluster wide lock with the specified name.
    `void` | SharedData.`getLockWithTimeout(String name, long timeout, Handler<AsyncResult<Lock>> resultHandler)` Like `SharedData` but specifying a timeout.
    `void` | Counter.`incrementAndGet(Handler<AsyncResult<Long>> resultHandler)` Increment the counter atomically and return the new count
    `void` | AsyncMap.`put(K k, V v, Handler<AsyncResult<Void>> completionHandler)` Put a value in the map, asynchronously.
    `void` | AsyncMap.`put(K k, V v, long timeout, Handler<AsyncResult<Void>> completionHandler)` Like `AsyncMap` but specifying a timeout.
    `void` | AsyncMap.`putIfAbsent(K k, V v, Handler<AsyncResult<V>> completionHandler)` Put the entry only if there is no entry with the key already present.
    `void` | AsyncMap.`putIfAbsent(K k, V v, long timeout, Handler<AsyncResult<V>> completionHandler)` Link `AsyncMap` but specifying a timeout.
    `void` | AsyncMap.`remove(K k, Handler<AsyncResult<V>> resultHandler)` Remove a value from the map, asynchronously.
    `void` | AsyncMap.`removeIfPresent(K k, V v, Handler<AsyncResult<Boolean>> resultHandler)` Remove a value from the map, only if entry already exists with same value.
    `void` | AsyncMap.`replace(K k, V v, Handler<AsyncResult<V>> resultHandler)` Replace the entry only if it is currently mapped to some value
    `void` | AsyncMap.`replaceIfPresent(K k, V oldValue, V newValue, Handler<AsyncResult<Boolean>> resultHandler)` Replace the entry only if it is currently mapped to a specific value
    `void` | AsyncMap.`size(Handler<AsyncResult<Integer>> resultHandler)` Provide the number of entries in the map

  - ### Uses of AsyncResult in io.vertx.rxjava.ext.auth

    Method parameters in io.vertx.rxjava.ext.auth with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `void` | AuthProvider.`authenticate(JsonObject authInfo, Handler<AsyncResult<User>> resultHandler)` Authenticate a user.
    `User` | User.`isAuthorised(String authority, Handler<AsyncResult<Boolean>> resultHandler)` Is the user authorised to

  - ### Uses of AsyncResult in io.vertx.rxjava.ext.auth.common

    Method parameters in io.vertx.rxjava.ext.auth.common with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `void` | AuthProvider.`authenticate(JsonObject authInfo, Handler<AsyncResult<User>> resultHandler)` Authenticate a user.
    `User` | User.`hasPermission(String permission, Handler<AsyncResult<Boolean>> resultHandler)` Does the user have the specified permission?
    `User` | User.`hasPermissions(Set<String> permissions, Handler<AsyncResult<Boolean>> resultHandler)` Does the user have all the specified permissions?
    `User` | User.`hasRole(String role, Handler<AsyncResult<Boolean>> resultHandler)` Does the user have the specified role?
    `User` | User.`hasRoles(Set<String> roles, Handler<AsyncResult<Boolean>> resultHandler)` Does the user have all the specified roles?

  - ### Uses of AsyncResult in io.vertx.rxjava.ext.jdbc

    Method parameters in io.vertx.rxjava.ext.jdbc with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `JDBCClient` | JDBCClient.`getConnection(Handler<AsyncResult<io.vertx.rxjava.ext.sql.SQLConnection>> handler)` Returns a connection that can be used to perform SQL operations on.

  - ### Uses of AsyncResult in io.vertx.rxjava.ext.mail

    Method parameters in io.vertx.rxjava.ext.mail with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `MailClient` | MailClient.`sendMail(MailMessage email, Handler<AsyncResult<MailResult>> resultHandler)` send a single mail via MailClient
    `MailService` | MailService.`sendMail(MailMessage email, Handler<AsyncResult<MailResult>> resultHandler)`

  - ### Uses of AsyncResult in io.vertx.rxjava.ext.mongo

    Method parameters in io.vertx.rxjava.ext.mongo with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `MongoClient` | MongoClient.`count(String collection, JsonObject query, Handler<AsyncResult<Long>> resultHandler)` Count matching documents in a collection.
    `MongoClient` | MongoClient.`createCollection(String collectionName, Handler<AsyncResult<Void>> resultHandler)` Create a new collection
    `MongoClient` | MongoClient.`dropCollection(String collection, Handler<AsyncResult<Void>> resultHandler)` Drop a collection
    `MongoClient` | MongoClient.`find(String collection, JsonObject query, Handler<AsyncResult<List<JsonObject>>> resultHandler)` Find matching documents in the specified collection
    `MongoClient` | MongoClient.`findOne(String collection, JsonObject query, JsonObject fields, Handler<AsyncResult<JsonObject>> resultHandler)` Find a single matching document in the specified collection
    `MongoClient` | MongoClient.`findWithOptions(String collection, JsonObject query, FindOptions options, Handler<AsyncResult<List<JsonObject>>> resultHandler)` Find matching documents in the specified collection, specifying options
    `MongoClient` | MongoClient.`getCollections(Handler<AsyncResult<List<String>>> resultHandler)` Get a list of all collections in the database.
    `MongoClient` | MongoClient.`insert(String collection, JsonObject document, Handler<AsyncResult<String>> resultHandler)` Insert a document in the specified collection
    `MongoClient` | MongoClient.`insertWithOptions(String collection, JsonObject document, WriteOption writeOption, Handler<AsyncResult<String>> resultHandler)` Insert a document in the specified collection with the specified write option
    `MongoClient` | MongoClient.`remove(String collection, JsonObject query, Handler<AsyncResult<Void>> resultHandler)` Remove matching documents from a collection
    `MongoClient` | MongoClient.`removeOne(String collection, JsonObject query, Handler<AsyncResult<Void>> resultHandler)` Remove a single matching document from a collection
    `MongoClient` | MongoClient.`removeOneWithOptions(String collection, JsonObject query, WriteOption writeOption, Handler<AsyncResult<Void>> resultHandler)` Remove a single matching document from a collection with the specified write option
    `MongoClient` | MongoClient.`removeWithOptions(String collection, JsonObject query, WriteOption writeOption, Handler<AsyncResult<Void>> resultHandler)` Remove matching documents from a collection with the specified write option
    `MongoClient` | MongoClient.`replace(String collection, JsonObject query, JsonObject replace, Handler<AsyncResult<Void>> resultHandler)` Replace matching documents in the specified collection
    `MongoClient` | MongoClient.`replaceWithOptions(String collection, JsonObject query, JsonObject replace, UpdateOptions options, Handler<AsyncResult<Void>> resultHandler)` Replace matching documents in the specified collection, specifying options
    `MongoClient` | MongoClient.`runCommand(String commandName, JsonObject command, Handler<AsyncResult<JsonObject>> resultHandler)` Run an arbitrary MongoDB command.
    `MongoClient` | MongoClient.`save(String collection, JsonObject document, Handler<AsyncResult<String>> resultHandler)` Save a document in the specified collection
    `MongoClient` | MongoClient.`saveWithOptions(String collection, JsonObject document, WriteOption writeOption, Handler<AsyncResult<String>> resultHandler)` Save a document in the specified collection with the specified write option
    `MongoClient` | MongoClient.`update(String collection, JsonObject query, JsonObject update, Handler<AsyncResult<Void>> resultHandler)` Update matching documents in the specified collection
    `MongoClient` | MongoClient.`updateWithOptions(String collection, JsonObject query, JsonObject update, UpdateOptions options, Handler<AsyncResult<Void>> resultHandler)` Update matching documents in the specified collection, specifying options

  - ### Uses of AsyncResult in io.vertx.rxjava.ext.unit

    Method parameters in io.vertx.rxjava.ext.unit with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `void` | TestCompletion.`handler(Handler<AsyncResult<Void>> completionHandler)` Completion handler for the end of the test, the result is successful when all test cases pass otherwise it is failed.

  - ### Uses of AsyncResult in io.vertx.rxjava.ext.web.sstore

    Method parameters in io.vertx.rxjava.ext.web.sstore with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `void` | SessionStore.`clear(Handler<AsyncResult<Boolean>> resultHandler)` Remove all sessions from the store
    `void` | SessionStore.`delete(String id, Handler<AsyncResult<Boolean>> resultHandler)` Delete the session with the specified ID
    `void` | SessionStore.`get(String id, Handler<AsyncResult<Session>> resultHandler)` Get the session with the specified ID
    `void` | SessionStore.`put(Session session, Handler<AsyncResult<Boolean>> resultHandler)` Add a session with the specified ID
    `void` | SessionStore.`size(Handler<AsyncResult<Integer>> resultHandler)` Get the number of sessions in the store

  - ### Uses of AsyncResult in io.vertx.rxjava.ext.web.templ

    Method parameters in io.vertx.rxjava.ext.web.templ with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `void` | TemplateEngine.`render(RoutingContext context, String templateFileName, Handler<AsyncResult<Buffer>> handler)` Render

  - ### Uses of AsyncResult in io.vertx.rxjava.redis

    Method parameters in io.vertx.rxjava.redis with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `RedisClient` | RedisClient.`append(String key, String value, Handler<AsyncResult<Long>> handler)` Append a value to a key
    `RedisClient` | RedisClient.`auth(String password, Handler<AsyncResult<String>> handler)` Authenticate to the server
    `RedisClient` | RedisClient.`bgrewriteaof(Handler<AsyncResult<String>> handler)` Asynchronously rewrite the append-only file
    `RedisClient` | RedisClient.`bgsave(Handler<AsyncResult<String>> handler)` Asynchronously save the dataset to disk
    `RedisClient` | RedisClient.`bitcount(String key, Handler<AsyncResult<Long>> handler)` Count set bits in a string
    `RedisClient` | RedisClient.`bitcountRange(String key, long start, long end, Handler<AsyncResult<Long>> handler)` Count set bits in a string
    `RedisClient` | RedisClient.`bitop(BitOperation operation, String destkey, List<String> keys, Handler<AsyncResult<Long>> handler)` Perform bitwise operations between strings
    `RedisClient` | RedisClient.`bitpos(String key, int bit, Handler<AsyncResult<Long>> handler)` Find first bit set or clear in a string
    `RedisClient` | RedisClient.`bitposFrom(String key, int bit, int start, Handler<AsyncResult<Long>> handler)` Find first bit set or clear in a string See also bitposRange() method, which takes start, and stop offset.
    `RedisClient` | RedisClient.`bitposRange(String key, int bit, int start, int stop, Handler<AsyncResult<Long>> handler)` Find first bit set or clear in a string Note: when both start, and stop offsets are specified, behaviour is slightly different than if only start is specified
    `RedisClient` | RedisClient.`blpop(String key, int seconds, Handler<AsyncResult<JsonArray>> handler)` Remove and get the first element in a list, or block until one is available
    `RedisClient` | RedisClient.`blpopMany(List<String> keys, int seconds, Handler<AsyncResult<JsonArray>> handler)` Remove and get the first element in any of the lists, or block until one is available
    `RedisClient` | RedisClient.`brpop(String key, int seconds, Handler<AsyncResult<JsonArray>> handler)` Remove and get the last element in a list, or block until one is available
    `RedisClient` | RedisClient.`brpoplpush(String key, String destkey, int seconds, Handler<AsyncResult<Void>> handler)` Pop a value from a list, push it to another list and return it; or block until one is available
    `RedisClient` | RedisClient.`brpopMany(List<String> keys, int seconds, Handler<AsyncResult<JsonArray>> handler)` Remove and get the last element in any of the lists, or block until one is available
    `RedisClient` | RedisClient.`clientGetname(Handler<AsyncResult<String>> handler)` Get the current connection name
    `RedisClient` | RedisClient.`clientKill(KillFilter filter, Handler<AsyncResult<Long>> handler)` Kill the connection of a client
    `RedisClient` | RedisClient.`clientList(Handler<AsyncResult<String>> handler)` Get the list of client connections
    `RedisClient` | RedisClient.`clientPause(long millis, Handler<AsyncResult<String>> handler)` Stop processing commands from clients for some time
    `RedisClient` | RedisClient.`clientSetname(String name, Handler<AsyncResult<String>> handler)` Set the current connection name
    `void` | RedisClient.`close(Handler<AsyncResult<Void>> handler)` Close the client - when it is fully closed the handler will be called.
    `RedisClient` | RedisClient.`clusterSlots(Handler<AsyncResult<JsonArray>> handler)` Get array of Cluster slot to node mappings
    `RedisClient` | RedisClient.`command(Handler<AsyncResult<JsonArray>> handler)` Get array of Redis command details
    `RedisClient` | RedisClient.`commandCount(Handler<AsyncResult<Long>> handler)` Get total number of Redis commands
    `RedisClient` | RedisClient.`commandGetkeys(Handler<AsyncResult<JsonArray>> handler)` Extract keys given a full Redis command
    `RedisClient` | RedisClient.`commandInfo(List<String> commands, Handler<AsyncResult<JsonArray>> handler)` Get array of specific Redis command details
    `RedisClient` | RedisClient.`configGet(String parameter, Handler<AsyncResult<JsonArray>> handler)` Get the value of a configuration parameter
    `RedisClient` | RedisClient.`configResetstat(Handler<AsyncResult<String>> handler)` Reset the stats returned by INFO
    `RedisClient` | RedisClient.`configRewrite(Handler<AsyncResult<String>> handler)` Rewrite the configuration file with the in memory configuration
    `RedisClient` | RedisClient.`configSet(String parameter, String value, Handler<AsyncResult<String>> handler)` Set a configuration parameter to the given value
    `RedisClient` | RedisClient.`dbsize(Handler<AsyncResult<Long>> handler)` Return the number of keys in the selected database
    `RedisClient` | RedisClient.`debugObject(String key, Handler<AsyncResult<String>> handler)` Get debugging information about a key
    `RedisClient` | RedisClient.`debugSegfault(Handler<AsyncResult<String>> handler)` Make the server crash
    `RedisClient` | RedisClient.`decr(String key, Handler<AsyncResult<Long>> handler)` Decrement the integer value of a key by one
    `RedisClient` | RedisClient.`decrby(String key, long decrement, Handler<AsyncResult<Long>> handler)` Decrement the integer value of a key by the given number
    `RedisClient` | RedisClient.`del(List<String> keys, Handler<AsyncResult<Long>> handler)` Delete a key
    `RedisClient` | RedisClient.`discard(Handler<AsyncResult<String>> handler)` Discard all commands issued after MULTI
    `RedisClient` | RedisClient.`dump(String key, Handler<AsyncResult<String>> handler)` Return a serialized version of the value stored at the specified key.
    `RedisClient` | RedisClient.`echo(String message, Handler<AsyncResult<String>> handler)` Echo the given string
    `RedisClient` | RedisClient.`eval(String script, List<String> keys, List<String> args, Handler<AsyncResult<Void>> handler)` Execute a Lua script server side
    `RedisClient` | RedisClient.`evalsha(String sha1, List<String> keys, List<String> values, Handler<AsyncResult<Void>> handler)` Execute a Lua script server side
    `RedisClient` | RedisClient.`exec(Handler<AsyncResult<Void>> handler)` Execute all commands issued after MULTI
    `RedisClient` | RedisClient.`exists(String key, Handler<AsyncResult<Long>> handler)` Determine if a key exists
    `RedisClient` | RedisClient.`expire(String key, int seconds, Handler<AsyncResult<Long>> handler)` Set a key's time to live in seconds
    `RedisClient` | RedisClient.`expireat(String key, long seconds, Handler<AsyncResult<Long>> handler)` Set the expiration for a key as a UNIX timestamp
    `RedisClient` | RedisClient.`flushall(Handler<AsyncResult<String>> handler)` Remove all keys from all databases
    `RedisClient` | RedisClient.`flushdb(Handler<AsyncResult<String>> handler)` Remove all keys from the current database
    `RedisClient` | RedisClient.`get(String key, Handler<AsyncResult<String>> handler)` Get the value of a key
    `RedisClient` | RedisClient.`getBinary(String key, Handler<AsyncResult<String>> handler)` Get the value of a key - without decoding as utf-8
    `RedisClient` | RedisClient.`getbit(String key, long offset, Handler<AsyncResult<Long>> handler)` Returns the bit value at offset in the string value stored at key
    `RedisClient` | RedisClient.`getrange(String key, long start, long end, Handler<AsyncResult<String>> handler)` Get a substring of the string stored at a key
    `RedisClient` | RedisClient.`getset(String key, String value, Handler<AsyncResult<String>> handler)` Set the string value of a key and return its old value
    `RedisClient` | RedisClient.`hdel(String key, String field, Handler<AsyncResult<Long>> handler)` Delete one or more hash fields
    `RedisClient` | RedisClient.`hdelMany(String key, List<String> fields, Handler<AsyncResult<Long>> handler)` Delete one or more hash fields
    `RedisClient` | RedisClient.`hexists(String key, String field, Handler<AsyncResult<Long>> handler)` Determine if a hash field exists
    `RedisClient` | RedisClient.`hget(String key, String field, Handler<AsyncResult<String>> handler)` Get the value of a hash field
    `RedisClient` | RedisClient.`hgetall(String key, Handler<AsyncResult<JsonObject>> handler)` Get all the fields and values in a hash
    `RedisClient` | RedisClient.`hincrby(String key, String field, long increment, Handler<AsyncResult<Long>> handler)` Increment the integer value of a hash field by the given number
    `RedisClient` | RedisClient.`hincrbyfloat(String key, String field, double increment, Handler<AsyncResult<String>> handler)` Increment the float value of a hash field by the given amount
    `RedisClient` | RedisClient.`hkeys(String key, Handler<AsyncResult<JsonArray>> handler)` Get all the fields in a hash
    `RedisClient` | RedisClient.`hlen(String key, Handler<AsyncResult<Long>> handler)` Get the number of fields in a hash
    `RedisClient` | RedisClient.`hmget(String key, List<String> fields, Handler<AsyncResult<JsonArray>> handler)` Get the values of all the given hash fields
    `RedisClient` | RedisClient.`hmset(String key, Map<String,String> values, Handler<AsyncResult<String>> handler)` Set multiple hash fields to multiple values
    `RedisClient` | RedisClient.`hscan(String key, String cursor, ScanOptions options, Handler<AsyncResult<JsonArray>> handler)` Incrementally iterate hash fields and associated values
    `RedisClient` | RedisClient.`hset(String key, String field, String value, Handler<AsyncResult<Long>> handler)` Set the string value of a hash field
    `RedisClient` | RedisClient.`hsetnx(String key, String field, String value, Handler<AsyncResult<Long>> handler)` Set the value of a hash field, only if the field does not exist
    `RedisClient` | RedisClient.`hvals(String key, Handler<AsyncResult<JsonArray>> handler)` Get all the values in a hash
    `RedisClient` | RedisClient.`incr(String key, Handler<AsyncResult<Long>> handler)` Increment the integer value of a key by one
    `RedisClient` | RedisClient.`incrby(String key, long increment, Handler<AsyncResult<Long>> handler)` Increment the integer value of a key by the given amount
    `RedisClient` | RedisClient.`incrbyfloat(String key, double increment, Handler<AsyncResult<String>> handler)` Increment the float value of a key by the given amount
    `RedisClient` | RedisClient.`info(Handler<AsyncResult<JsonObject>> handler)` Get information and statistics about the server
    `RedisClient` | RedisClient.`infoSection(String section, Handler<AsyncResult<JsonObject>> handler)` Get information and statistics about the server
    `RedisClient` | RedisClient.`keys(String pattern, Handler<AsyncResult<JsonArray>> handler)` Find all keys matching the given pattern
    `RedisClient` | RedisClient.`lastsave(Handler<AsyncResult<Long>> handler)` Get the UNIX time stamp of the last successful save to disk
    `RedisClient` | RedisClient.`lindex(String key, int index, Handler<AsyncResult<String>> handler)` Get an element from a list by its index
    `RedisClient` | RedisClient.`linsert(String key, InsertOptions option, String pivot, String value, Handler<AsyncResult<Long>> handler)` Insert an element before or after another element in a list
    `RedisClient` | RedisClient.`llen(String key, Handler<AsyncResult<Long>> handler)` Get the length of a list
    `RedisClient` | RedisClient.`lpop(String key, Handler<AsyncResult<String>> handler)` Remove and get the first element in a list
    `RedisClient` | RedisClient.`lpush(String key, String value, Handler<AsyncResult<Long>> handler)` Prepend one value to a list
    `RedisClient` | RedisClient.`lpushMany(String key, List<String> values, Handler<AsyncResult<Long>> handler)` Prepend one or multiple values to a list
    `RedisClient` | RedisClient.`lpushx(String key, String value, Handler<AsyncResult<Long>> handler)` Prepend a value to a list, only if the list exists
    `RedisClient` | RedisClient.`lrange(String key, long from, long to, Handler<AsyncResult<JsonArray>> handler)` Get a range of elements from a list
    `RedisClient` | RedisClient.`lrem(String key, long count, String value, Handler<AsyncResult<Long>> handler)` Remove elements from a list
    `RedisClient` | RedisClient.`lset(String key, long index, String value, Handler<AsyncResult<String>> handler)` Set the value of an element in a list by its index
    `RedisClient` | RedisClient.`ltrim(String key, long from, long to, Handler<AsyncResult<String>> handler)` Trim a list to the specified range
    `RedisClient` | RedisClient.`mget(String key, Handler<AsyncResult<JsonArray>> handler)` Get the value of the given key
    `RedisClient` | RedisClient.`mgetMany(List<String> keys, Handler<AsyncResult<JsonArray>> handler)` Get the values of all the given keys
    `RedisClient` | RedisClient.`migrate(String host, int port, String key, int destdb, long timeout, MigrateOptions options, Handler<AsyncResult<String>> handler)` Atomically transfer a key from a Redis instance to another one.
    `RedisClient` | RedisClient.`monitor(Handler<AsyncResult<Void>> handler)` Listen for all requests received by the server in real time
    `RedisClient` | RedisClient.`move(String key, int destdb, Handler<AsyncResult<Long>> handler)` Move a key to another database
    `RedisClient` | RedisClient.`mset(Map<String,String> keyvals, Handler<AsyncResult<String>> handler)` Set multiple keys to multiple values
    `RedisClient` | RedisClient.`msetnx(Map<String,String> keyvals, Handler<AsyncResult<Long>> handler)` Set multiple keys to multiple values, only if none of the keys exist
    `RedisClient` | RedisClient.`multi(Handler<AsyncResult<String>> handler)` Mark the start of a transaction block
    `RedisClient` | RedisClient.`object(String key, ObjectCmd cmd, Handler<AsyncResult<Void>> handler)` Inspect the internals of Redis objects
    `RedisClient` | RedisClient.`persist(String key, Handler<AsyncResult<Long>> handler)` Remove the expiration from a key
    `RedisClient` | RedisClient.`pexpire(String key, long millis, Handler<AsyncResult<Long>> handler)` Set a key's time to live in milliseconds
    `RedisClient` | RedisClient.`pexpireat(String key, long millis, Handler<AsyncResult<Long>> handler)` Set the expiration for a key as a UNIX timestamp specified in milliseconds
    `RedisClient` | RedisClient.`pfadd(String key, String element, Handler<AsyncResult<Long>> handler)` Adds the specified element to the specified HyperLogLog.
    `RedisClient` | RedisClient.`pfaddMany(String key, List<String> elements, Handler<AsyncResult<Long>> handler)` Adds the specified elements to the specified HyperLogLog.
    `RedisClient` | RedisClient.`pfcount(String key, Handler<AsyncResult<Long>> handler)` Return the approximated cardinality of the set observed by the HyperLogLog at key.
    `RedisClient` | RedisClient.`pfcountMany(List<String> keys, Handler<AsyncResult<Long>> handler)` Return the approximated cardinality of the set(s) observed by the HyperLogLog at key(s).
    `RedisClient` | RedisClient.`pfmerge(String destkey, List<String> keys, Handler<AsyncResult<String>> handler)` Merge N different HyperLogLogs into a single one.
    `RedisClient` | RedisClient.`ping(Handler<AsyncResult<String>> handler)` Ping the server
    `RedisClient` | RedisClient.`psetex(String key, long millis, String value, Handler<AsyncResult<Void>> handler)` Set the value and expiration in milliseconds of a key
    `RedisClient` | RedisClient.`psubscribe(String pattern, Handler<AsyncResult<Void>> handler)` Listen for messages published to channels matching the given pattern
    `RedisClient` | RedisClient.`psubscribeMany(List<String> patterns, Handler<AsyncResult<Void>> handler)` Listen for messages published to channels matching the given patterns
    `RedisClient` | RedisClient.`pttl(String key, Handler<AsyncResult<Long>> handler)` Get the time to live for a key in milliseconds
    `RedisClient` | RedisClient.`publish(String channel, String message, Handler<AsyncResult<Long>> handler)` Post a message to a channel
    `RedisClient` | RedisClient.`pubsubChannels(String pattern, Handler<AsyncResult<JsonArray>> handler)` Lists the currently active channels - only those matching the pattern
    `RedisClient` | RedisClient.`pubsubNumpat(Handler<AsyncResult<Long>> handler)` Returns the number of subscriptions to patterns (that are performed using the PSUBSCRIBE command)
    `RedisClient` | RedisClient.`pubsubNumsub(List<String> channels, Handler<AsyncResult<JsonArray>> handler)` Returns the number of subscribers (not counting clients subscribed to patterns) for the specified channels
    `RedisClient` | RedisClient.`punsubscribe(List<String> patterns, Handler<AsyncResult<Void>> handler)` Stop listening for messages posted to channels matching the given patterns
    `RedisClient` | RedisClient.`randomkey(Handler<AsyncResult<String>> handler)` Return a random key from the keyspace
    `RedisClient` | RedisClient.`rename(String key, String newkey, Handler<AsyncResult<String>> handler)` Rename a key
    `RedisClient` | RedisClient.`renamenx(String key, String newkey, Handler<AsyncResult<Long>> handler)` Rename a key, only if the new key does not exist
    `RedisClient` | RedisClient.`restore(String key, long millis, String serialized, Handler<AsyncResult<String>> handler)` Create a key using the provided serialized value, previously obtained using DUMP.
    `RedisClient` | RedisClient.`role(Handler<AsyncResult<JsonArray>> handler)` Return the role of the instance in the context of replication
    `RedisClient` | RedisClient.`rpop(String key, Handler<AsyncResult<String>> handler)` Remove and get the last element in a list
    `RedisClient` | RedisClient.`rpoplpush(String key, String destkey, Handler<AsyncResult<String>> handler)` Remove the last element in a list, append it to another list and return it
    `RedisClient` | RedisClient.`rpush(String key, String value, Handler<AsyncResult<Long>> handler)` Append one or multiple values to a list
    `RedisClient` | RedisClient.`rpushMany(String key, List<String> values, Handler<AsyncResult<Long>> handler)` Append one or multiple values to a list
    `RedisClient` | RedisClient.`rpushx(String key, String value, Handler<AsyncResult<Long>> handler)` Append a value to a list, only if the list exists
    `RedisClient` | RedisClient.`sadd(String key, String member, Handler<AsyncResult<Long>> handler)` Add a member to a set
    `RedisClient` | RedisClient.`saddMany(String key, List<String> members, Handler<AsyncResult<Long>> handler)` Add one or more members to a set
    `RedisClient` | RedisClient.`save(Handler<AsyncResult<String>> handler)` Synchronously save the dataset to disk
    `RedisClient` | RedisClient.`scan(String cursor, ScanOptions options, Handler<AsyncResult<Void>> handler)` Incrementally iterate the keys space
    `RedisClient` | RedisClient.`scard(String key, Handler<AsyncResult<Long>> handler)` Get the number of members in a set
    `RedisClient` | RedisClient.`scriptExists(String script, Handler<AsyncResult<JsonArray>> handler)` Check existence of script in the script cache.
    `RedisClient` | RedisClient.`scriptExistsMany(List<String> scripts, Handler<AsyncResult<JsonArray>> handler)` Check existence of scripts in the script cache.
    `RedisClient` | RedisClient.`scriptFlush(Handler<AsyncResult<String>> handler)` Remove all the scripts from the script cache.
    `RedisClient` | RedisClient.`scriptKill(Handler<AsyncResult<String>> handler)` Kill the script currently in execution.
    `RedisClient` | RedisClient.`scriptLoad(String script, Handler<AsyncResult<String>> handler)` Load the specified Lua script into the script cache.
    `RedisClient` | RedisClient.`sdiff(String key, List<String> cmpkeys, Handler<AsyncResult<JsonArray>> handler)` Subtract multiple sets
    `RedisClient` | RedisClient.`sdiffstore(String destkey, String key, List<String> cmpkeys, Handler<AsyncResult<Long>> handler)` Subtract multiple sets and store the resulting set in a key
    `RedisClient` | RedisClient.`select(int dbindex, Handler<AsyncResult<String>> handler)` Change the selected database for the current connection
    `RedisClient` | RedisClient.`set(String key, String value, Handler<AsyncResult<Void>> handler)` Set the string value of a key
    `RedisClient` | RedisClient.`setBinary(String key, String value, Handler<AsyncResult<Void>> handler)` Set the binary string value of a key - without encoding as utf-8
    `RedisClient` | RedisClient.`setbit(String key, long offset, int bit, Handler<AsyncResult<Long>> handler)` Sets or clears the bit at offset in the string value stored at key
    `RedisClient` | RedisClient.`setex(String key, long seconds, String value, Handler<AsyncResult<String>> handler)` Set the value and expiration of a key
    `RedisClient` | RedisClient.`setnx(String key, String value, Handler<AsyncResult<Long>> handler)` Set the value of a key, only if the key does not exist
    `RedisClient` | RedisClient.`setrange(String key, int offset, String value, Handler<AsyncResult<Long>> handler)` Overwrite part of a string at key starting at the specified offset
    `RedisClient` | RedisClient.`setWithOptions(String key, String value, SetOptions options, Handler<AsyncResult<Void>> handler)` Set the string value of a key
    `RedisClient` | RedisClient.`sinter(List<String> keys, Handler<AsyncResult<JsonArray>> handler)` Intersect multiple sets
    `RedisClient` | RedisClient.`sinterstore(String destkey, List<String> keys, Handler<AsyncResult<Long>> handler)` Intersect multiple sets and store the resulting set in a key
    `RedisClient` | RedisClient.`sismember(String key, String member, Handler<AsyncResult<Long>> handler)` Determine if a given value is a member of a set
    `RedisClient` | RedisClient.`slaveof(String host, int port, Handler<AsyncResult<String>> handler)` Make the server a slave of another instance
    `RedisClient` | RedisClient.`slaveofNoone(Handler<AsyncResult<String>> handler)` Make this server a master
    `RedisClient` | RedisClient.`slowlogGet(int limit, Handler<AsyncResult<JsonArray>> handler)` Read the Redis slow queries log
    `RedisClient` | RedisClient.`slowlogLen(Handler<AsyncResult<Long>> handler)` Get the length of the Redis slow queries log
    `RedisClient` | RedisClient.`slowlogReset(Handler<AsyncResult<Void>> handler)` Reset the Redis slow queries log
    `RedisClient` | RedisClient.`smembers(String key, Handler<AsyncResult<JsonArray>> handler)` Get all the members in a set
    `RedisClient` | RedisClient.`smove(String key, String destkey, String member, Handler<AsyncResult<Long>> handler)` Move a member from one set to another
    `RedisClient` | RedisClient.`sort(String key, SortOptions options, Handler<AsyncResult<JsonArray>> handler)` Sort the elements in a list, set or sorted set
    `RedisClient` | RedisClient.`spop(String key, Handler<AsyncResult<String>> handler)` Remove and return a random member from a set
    `RedisClient` | RedisClient.`spopMany(String key, int count, Handler<AsyncResult<String>> handler)` Remove and return random members from a set
    `RedisClient` | RedisClient.`srandmember(String key, int count, Handler<AsyncResult<JsonArray>> handler)` Get one or multiple random members from a set
    `RedisClient` | RedisClient.`srem(String key, String member, Handler<AsyncResult<Long>> handler)` Remove one member from a set
    `RedisClient` | RedisClient.`sremMany(String key, List<String> members, Handler<AsyncResult<Long>> handler)` Remove one or more members from a set
    `RedisClient` | RedisClient.`sscan(String key, String cursor, ScanOptions options, Handler<AsyncResult<Void>> handler)` Incrementally iterate Set elements
    `RedisClient` | RedisClient.`strlen(String key, Handler<AsyncResult<Long>> handler)` Get the length of the value stored in a key
    `RedisClient` | RedisClient.`subscribe(List<String> channels, Handler<AsyncResult<Void>> handler)` Listen for messages published to the given channels
    `RedisClient` | RedisClient.`sunion(List<String> keys, Handler<AsyncResult<JsonArray>> handler)` Add multiple sets
    `RedisClient` | RedisClient.`sunionstore(String destkey, List<String> keys, Handler<AsyncResult<Long>> handler)` Add multiple sets and store the resulting set in a key
    `RedisClient` | RedisClient.`sync(Handler<AsyncResult<Void>> handler)` Internal command used for replication
    `RedisClient` | RedisClient.`time(Handler<AsyncResult<JsonArray>> handler)` Return the current server time
    `RedisClient` | RedisClient.`ttl(String key, Handler<AsyncResult<Long>> handler)` Get the time to live for a key
    `RedisClient` | RedisClient.`type(String key, Handler<AsyncResult<String>> handler)` Determine the type stored at key
    `RedisClient` | RedisClient.`unsubscribe(List<String> channels, Handler<AsyncResult<Void>> handler)` Stop listening for messages posted to the given channels
    `RedisClient` | RedisClient.`unwatch(Handler<AsyncResult<String>> handler)` Forget about all watched keys
    `RedisClient` | RedisClient.`watch(List<String> keys, Handler<AsyncResult<String>> handler)` Watch the given keys to determine execution of the MULTI/EXEC block
    `RedisClient` | RedisClient.`zadd(String key, double score, String member, Handler<AsyncResult<Long>> handler)` Add one or more members to a sorted set, or update its score if it already exists
    `RedisClient` | RedisClient.`zaddMany(String key, Map<String,Double> members, Handler<AsyncResult<Long>> handler)` Add one or more members to a sorted set, or update its score if it already exists
    `RedisClient` | RedisClient.`zcard(String key, Handler<AsyncResult<Long>> handler)` Get the number of members in a sorted set
    `RedisClient` | RedisClient.`zcount(String key, double min, double max, Handler<AsyncResult<Long>> handler)` Count the members in a sorted set with scores within the given values
    `RedisClient` | RedisClient.`zincrby(String key, double increment, String member, Handler<AsyncResult<String>> handler)` Increment the score of a member in a sorted set
    `RedisClient` | RedisClient.`zinterstore(String destkey, List<String> sets, AggregateOptions options, Handler<AsyncResult<Long>> handler)` Intersect multiple sorted sets and store the resulting sorted set in a new key
    `RedisClient` | RedisClient.`zinterstoreWeighed(String destkey, Map<String,Double> sets, AggregateOptions options, Handler<AsyncResult<Long>> handler)` Intersect multiple sorted sets and store the resulting sorted set in a new key using weights for scoring
    `RedisClient` | RedisClient.`zlexcount(String key, String min, String max, Handler<AsyncResult<Long>> handler)` Count the number of members in a sorted set between a given lexicographical range
    `RedisClient` | RedisClient.`zrange(String key, long start, long stop, Handler<AsyncResult<JsonArray>> handler)` Return a range of members in a sorted set, by index
    `RedisClient` | RedisClient.`zrangebylex(String key, String min, String max, LimitOptions options, Handler<AsyncResult<JsonArray>> handler)` Return a range of members in a sorted set, by lexicographical range
    `RedisClient` | RedisClient.`zrangebyscore(String key, String min, String max, RangeLimitOptions options, Handler<AsyncResult<JsonArray>> handler)` Return a range of members in a sorted set, by score
    `RedisClient` | RedisClient.`zrangeWithOptions(String key, long start, long stop, RangeOptions options, Handler<AsyncResult<JsonArray>> handler)` Return a range of members in a sorted set, by index
    `RedisClient` | RedisClient.`zrank(String key, String member, Handler<AsyncResult<Long>> handler)` Determine the index of a member in a sorted set
    `RedisClient` | RedisClient.`zrem(String key, String member, Handler<AsyncResult<Long>> handler)` Remove one member from a sorted set
    `RedisClient` | RedisClient.`zremMany(String key, List<String> members, Handler<AsyncResult<Long>> handler)` Remove one or more members from a sorted set
    `RedisClient` | RedisClient.`zremrangebylex(String key, String min, String max, Handler<AsyncResult<Long>> handler)` Remove all members in a sorted set between the given lexicographical range
    `RedisClient` | RedisClient.`zremrangebyrank(String key, long start, long stop, Handler<AsyncResult<Long>> handler)` Remove all members in a sorted set within the given indexes
    `RedisClient` | RedisClient.`zremrangebyscore(String key, String min, String max, Handler<AsyncResult<Long>> handler)` Remove all members in a sorted set within the given scores
    `RedisClient` | RedisClient.`zrevrange(String key, long start, long stop, RangeOptions options, Handler<AsyncResult<JsonArray>> handler)` Return a range of members in a sorted set, by index, with scores ordered from high to low
    `RedisClient` | RedisClient.`zrevrangebylex(String key, String max, String min, LimitOptions options, Handler<AsyncResult<JsonArray>> handler)` Return a range of members in a sorted set, by score, between the given lexicographical range with scores ordered from high to low
    `RedisClient` | RedisClient.`zrevrangebyscore(String key, String max, String min, RangeLimitOptions options, Handler<AsyncResult<JsonArray>> handler)` Return a range of members in a sorted set, by score, with scores ordered from high to low
    `RedisClient` | RedisClient.`zrevrank(String key, String member, Handler<AsyncResult<Long>> handler)` Determine the index of a member in a sorted set, with scores ordered from high to low
    `RedisClient` | RedisClient.`zscan(String key, String cursor, ScanOptions options, Handler<AsyncResult<Void>> handler)` Incrementally iterate sorted sets elements and associated scores
    `RedisClient` | RedisClient.`zscore(String key, String member, Handler<AsyncResult<String>> handler)` Get the score associated with the given member in a sorted set
    `RedisClient` | RedisClient.`zunionstore(String destkey, List<String> sets, AggregateOptions options, Handler<AsyncResult<Long>> handler)` Add multiple sorted sets and store the resulting sorted set in a new key
    `RedisClient` | RedisClient.`zunionstoreWeighed(String key, Map<String,Double> sets, AggregateOptions options, Handler<AsyncResult<Long>> handler)` Add multiple sorted sets using weights, and store the resulting sorted set in a new key

  - ### Uses of AsyncResult in io.vertx.spi.cluster.hazelcast

    Method parameters in io.vertx.spi.cluster.hazelcast with type arguments of type AsyncResult
    Modifier and Type | Method and Description
    --- | ---
    `<K,V> void` | HazelcastClusterManager.`getAsyncMap(String name, Handler<AsyncResult<AsyncMap<K,V>>> resultHandler)`
    `<K,V> void` | HazelcastClusterManager.`getAsyncMultiMap(String name, Handler<AsyncResult<AsyncMultiMap<K,V>>> resultHandler)` Every eventbus handler has an ID.
    `void` | HazelcastClusterManager.`getCounter(String name, Handler<AsyncResult<Counter>> resultHandler)`
    `void` | HazelcastClusterManager.`getLockWithTimeout(String name, long timeout, Handler<AsyncResult<Lock>> resultHandler)`
    `void` | HazelcastClusterManager.`join(Handler<AsyncResult<Void>> resultHandler)`
    `void` | HazelcastClusterManager.`leave(Handler<AsyncResult<Void>> resultHandler)`

Copyright © 2015. All Rights Reserved.