code: @Bean
  	public SubscribableChannel clientInboundChannel() {
  		ExecutorSubscribableChannel executorSubscribableChannel = new ExecutorSubscribableChannel(
  				clientInboundChannelExecutor());
  		configureClientInboundChannel(executorSubscribableChannel);
  		return executorSubscribableChannel;
  	}
docs: Channel for inbound messages between {@link WampSubProtocolHandler},
  {@link #brokerMessageHandler()} and {@link #annotationMethodMessageHandler()}