anchor.diff:  
   == Send Message
   
  +[source,java]
   ------------------------------------------------------------------------------------------------------
   from("direct:start")
     .setBody(constant("Camel rocks!"))
  
positive.code: 
  Use listQueues operation to list queues.
  
  ------------------------------------------------------------------------------------------------------
  from("direct:start")
    .setHeader(SqsConstants.SQS_OPERATION, constant("listQueues"))
  
negative.code: 
  Use deleteMessage operation to delete a single message. You'll need to set a receipt handle header for the message you want to delete.
  
  [source,java]
  ------------------------------------------------------------------------------------------------------
  from("direct:start")
    .setHeader(SqsConstants.SQS_OPERATION, constant("deleteMessage"))
  