AgoraChatRecallMessageInfo 成员列表

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

	conversationId	AgoraChatRecallMessageInfo
	ext	AgoraChatRecallMessageInfo
	recallBy	AgoraChatRecallMessageInfo
	recallMessage	AgoraChatRecallMessageInfo
	recallMessageId	AgoraChatRecallMessageInfo