code: public void terminate()
  	{
  		log( "term" );
  
  		fActivated = false;
  		converter = null;
  
  		source.removePropertyChangedHandler( sourceHandler );
  		source = null;
  		sourceHandler = null;
  
  		destination.removePropertyChangedHandler( destinationHandler );
  		destination = null;
  		destinationHandler = null;
  
  	}
docs: Terminates the Data Binding activation and cleans up all related
  resources. You should call this method when you want to free the binding,
  in order to lower memory usage.