/**
  * Is called when the ConnectionEditPart is 'selected'. It then highlights the selected
  * ConnectionEditPart.
  *
  * @see org.eclipse.gef.editpolicies.SelectionHandlesEditPolicy#addSelectionHandles()
  */
 @Override
 protected void addSelectionHandles() {
   if (checkReconnectionFeature()) {
     super.addSelectionHandles();
   }
   showHighlight();
 }