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

	antispamBusinessId	NIMQChatUpdateChannelParam
	channelId	NIMQChatUpdateChannelParam
	custom	NIMQChatUpdateChannelParam
	name	NIMQChatUpdateChannelParam
	topic	NIMQChatUpdateChannelParam
	viewMode	NIMQChatUpdateChannelParam
	visitorMode	NIMQChatUpdateChannelParam