private async Task Show(ViewModelCommandParameter parameter)
 {
     using (IViewModel viewModel = GetViewModel(parameter.ViewModelType))
     {
         await viewModel.ShowAsync(parameter.Context);
         _toastPresenter.ShowAsync(viewModel.GetType().Name + " is closed", ToastDuration.Long);
     }
 }
 private async Task Show(ViewModelCommandParameter parameter)
 {
     using (IViewModel viewModel = GetViewModel(parameter.ViewModelType))
         await viewModel.ShowAsync(parameter.Context);
 }