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

	channelExt	NIMSignalingChannelInfo
	channelId	NIMSignalingChannelInfo
	channelName	NIMSignalingChannelInfo
	channelType	NIMSignalingChannelInfo
	createTimeStamp	NIMSignalingChannelInfo
	creatorId	NIMSignalingChannelInfo
	expireTimeStamp	NIMSignalingChannelInfo
	invalid	NIMSignalingChannelInfo
	members	NIMSignalingChannelDetailedInfo
	nertcJoinRoomResponse	NIMSignalingChannelInfo
	nertcToken	NIMSignalingChannelInfo
	nertcTokenTtl	NIMSignalingChannelInfo