MessageAPI includes the methods that needs to be called via messageClient. The following sections detail the input and output of each API and the meaning of the parameters:
sendMessage()
sendMessageBatch()
receiveMessage()
changeMessageVisibilitySeconds()
changeMessageVisibilityBatchSeconds()
deleteMessage()
deleteMessageBatch()
deadMessage()
deadMessageBatch()
peekMessage()
deletePeekMessage()
deletePeekMessageBatch()