@Override
	public void send(Message<?> message) {
		source.send(message);
	}
Creates a stream to test a processing chain including a sink but no source and adds a {@link NamedChannelSource} to
create a complete stream.

@author David Turanski
spring-xd-dirt/src/main/java/org/springframework/xd/dirt/test/process/SingleNodeProcessingChainProducer.java