public void LoadFriends(ILocalUser user, Action <bool> callback)
 {
     if (!IsAuthenticated())
     {
         Logger.e("LoadScores can only be called after authentication.");
         callback?.Invoke(false);
     }
     else
     {
         mClient.LoadFriends(callback);
     }
 }
        /// <summary>
        /// Loads the friends that also play this game.  See loadConnectedPlayers.
        /// </summary>
        /// <param name="callback">Callback.</param>
        public void LoadFriends(ILocalUser user, Action <bool> callback)
        {
            if (!IsAuthenticated())
            {
                Logger.e("LoadScores can only be called after authentication.");
                if (callback != null)
                {
                    callback(false);
                }
            }

            mClient.LoadFriends(callback);
        }