https://pub.dev/documentation/tencentcloud_chatroom/latest/tencentcloud_chatroom_config/TencentCloudAvChatRoomConfig/userSig.html
userSig property - TencentCloudAvChatRoomConfig class - tencentcloud_chatroom_config library - Dart...
API docs for the userSig property from the TencentCloudAvChatRoomConfig class, for the Dart programming language.
propertyclasstencentcloudchatroomconfig