NIMQChatChannelGetCategoryChannelsPageParam 成员列表

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

category_id	NIMQChatChannelGetCategoryChannelsPageParam
cb	NIMQChatChannelGetCategoryChannelsPageParam
limit	NIMQChatChannelGetCategoryChannelsPageParam
server_id	NIMQChatChannelGetCategoryChannelsPageParam
timestamp	NIMQChatChannelGetCategoryChannelsPageParam
user_data	NIMQChatChannelGetCategoryChannelsPageParam