protected async override void OnAddMemberToTheClique()
        {
            Guid busyKey = Guid.NewGuid();

            UpdateBusyVisualState(busyKey, true);

            ResetCancellationTokenSource(ref _inviteMemberToTheTeamCancellationTokenSource);
            CancellationTokenSource cancellationTokenSource = _inviteMemberToTheTeamCancellationTokenSource;

            try {
                Tuple <List <ProfileDTO>, string> inviteResult = await _inviteService.AddMembersToTheTeamByTeamIdAsync(_targetTeam.Id, PossibleGroupMembers.Select <ProfileDTO, long>((pDTO) => pDTO.Id), cancellationTokenSource);

                if (string.IsNullOrEmpty(inviteResult.Item2) || string.IsNullOrWhiteSpace(inviteResult.Item2))
                {
                    await DialogService.ToastAsync(AddMemberToTeamPopupViewModel._TEAM_INVITE_HAS_BEEN_SENT_MESSAGE);

                    await((ContentPageBaseViewModel)NavigationService.LastPageViewModel).InitializeAsync(new MembersAttachedToTheTeamArgs()
                    {
                        AttachedMembers = inviteResult.Item1
                    });

                    ClosePopupCommand.Execute(null);
                }
                else
                {
                    await DialogService.ToastAsync(inviteResult.Item2);

                    if (inviteResult.Item1.Any())
                    {
                        PossibleGroupMembers = PossibleGroupMembers
                                               .Except <ProfileDTO>(PossibleGroupMembers.Where <ProfileDTO>((pDTO) => inviteResult.Item1.Any(invitedPDTO => invitedPDTO.Id == pDTO.Id)))
                                               .ToObservableCollection();

                        await((ContentPageBaseViewModel)NavigationService.LastPageViewModel).InitializeAsync(new MembersAttachedToTheTeamArgs()
                        {
                            AttachedMembers = inviteResult.Item1
                        });
                    }
                }
            }
            catch (OperationCanceledException) { }
            catch (ObjectDisposedException) { }
            catch (ServiceAuthenticationException) { }
            catch (Exception exc) {
                Crashes.TrackError(exc);

                await DialogService.ToastAsync(exc.Message);
            }

            UpdateBusyVisualState(busyKey, false);
        }