vertx / io.vertx.rxjava.core.file / FileSystem / chown

# chown

`open fun chown(path: String, user: String, group: String, handler: Handler<AsyncResult<Void>>): FileSystem`

Change the ownership on the file represented by `path` to `user` and {code group}, asynchronously.

### Parameters

`path` - the path to the file

`user` - the user name, `null` will not change the user name

`group` - the user group, `null` will not change the user group name

`handler` - the handler that will be called on completion

Return
a reference to this, so the API can be used fluently