private async void OnPropertyChanged(object sender, PropertyChangedEventArgs propertyChangedEventArgs)
 {
     switch (propertyChangedEventArgs.PropertyName)
     {
     case nameof(ProjectName):
         if (IsConnected)
         {
             await HandleServerError(async() =>
                                     await TestCases.LoadAsync(ProjectName));
         }
         break;
     }
 }