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

cb	NIMQChatCheckPermissionsParam
channel_id	NIMQChatCheckPermissionsParam
permission_count	NIMQChatCheckPermissionsParam
permissions	NIMQChatCheckPermissionsParam
server_id	NIMQChatCheckPermissionsParam
user_data	NIMQChatCheckPermissionsParam