protected override void UpdateGroup(IUser user, IPermissionProvider permissions,
                                     IUserInfo targetUser, IPermissionGroup groupToUpdate)
 {
     if (permissions.AddGroup(targetUser, groupToUpdate))
     {
         user.SendMessage($"Successfully added {targetUser:Name} to \"{groupToUpdate:Name}\"!",
                          Color.DarkGreen);
     }
     else
     {
         user.SendMessage($"Failed to add {targetUser:Name} to \"{groupToUpdate:Name}\"!", Color.Red);
     }
 }