title: How to bind to UITextView.EditingDidBegin in MvvmCross (Xamarin Studio)
body: <p>If there isn't already a binding for this - can somebody show me how to add a new binding for this (and register it)?</p>
  
  <p>I've tried locating the UIButton.TouchUpInside binding handler code so I could copy that... without luck.</p>
  
  <p>Thanks</p>