private async Task RunTests()
 {
     try
     {
         mainTextView.Text = string.Empty;
         var runner = new iOSRunner(mainLabel, mainTextView, InvokeOnMainThread);
         await runner.ExecuteAllTestsAsync();
     }
     catch (Exception e)
     {
         mainTextView.Text = e.ToString();
     }
 }
 private async Task RunTests()
 {
     try
     {
         mainTextView.Text = string.Empty;
         var runner = new iOSRunner(mainLabel, mainTextView, InvokeOnMainThread);
         await runner.ExecuteAllTestsAsync();
     }
     catch (Exception e)
     {
         mainTextView.Text = e.ToString();
     }
 }