NIMChatroom 成员列表

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

	announcement	NIMChatroom
	broadcastUrl	NIMChatroom
	creator	NIMChatroom
	ext	NIMChatroom
-	inAllMuteMode	NIMChatroom
	name	NIMChatroom
	onlineUserCount	NIMChatroom
	queueModificationLevel	NIMChatroom
	roomId	NIMChatroom