vertx / io.vertx.ext.shell.command / CommandRegistry / unregisterCommand

# unregisterCommand

`abstract fun unregisterCommand(commandName: String): CommandRegistry`

Like `#unregisterCommand(String, Handler)`, without a completion handler.

`abstract fun unregisterCommand(commandName: String, completionHandler: Handler<AsyncResult<Void>>): CommandRegistry`

Unregister a command.

### Parameters

`commandName` - the command name

`completionHandler` - notified when the command is unregistered

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