docs: @Override
  	public void setReceiver(XExpression newReceiver)
  	{
  		XExpression oldReceiver = receiver;
  		receiver = newReceiver;
  		if (eNotificationRequired())
  			eNotify(new ENotificationImpl(this, Notification.SET, SarlPackage.SARL_CASTED_EXPRESSION__RECEIVER, oldReceiver, receiver));
  	}