NIMSignalingJoinParam 成员列表

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

channel_id_	NIMSignalingJoinParam
custom_info_	NIMSignalingJoinParam
nertc_channel_name_	NIMSignalingJoinParam
nertc_join_room_query_param_	NIMSignalingJoinParam
nertc_token_ttl_	NIMSignalingJoinParam
offline_enabled_	NIMSignalingJoinParam
uid_	NIMSignalingJoinParam