MQTTClient_message 成员列表

成员的完整列表，这些成员属于 MQTTClient_message,包括所有继承而来的类成员

dup	MQTTClient_message
msgid	MQTTClient_message
payload	MQTTClient_message
payloadlen	MQTTClient_message
properties	MQTTClient_message
qos	MQTTClient_message
retained	MQTTClient_message
struct_id	MQTTClient_message
struct_version	MQTTClient_message