OnConnectionUserListChanged typedef
        OnConnectionUserListChanged =
     void Function(List<TUIConnectionUser>  connectedList, List<TUIConnectionUser>  joinedList, List<TUIConnectionUser>  leavedList)
    
    
    
Implementation
typedef OnConnectionUserListChanged = void Function(
    List<TUIConnectionUser> connectedList,
    List<TUIConnectionUser> joinedList,
    List<TUIConnectionUser> leavedList);