anchor.diff:      | :? CanopyException -> reraise()
       | ex -> failwithf "Failed to click: %A%sInner Message: %A" selector System.Environment.NewLine ex
   
  -/// Clicks an element and waits for the waitSelector to appear.
  -let clickAndWait clickSelector waitSelector =
  -    click clickSelector
  -    waitFor waitSelector
   
   /// Clicks the Android back button
   let back () =
  
positive.code:         File.Delete fileName
          
      screenShot.SaveAsFile(fileName, Drawing.Imaging.ImageFormat.Png)
  
negative.code:             | _ -> false)
      with
      | ex -> failwithf "Failed to go back%sInner Message: %s" System.Environment.NewLine ex.Message
  
  // Assertions
  
  