code: public void setOperator(String newOperator) {
  		String oldOperator = operator;
  		operator = newOperator;
  		if (eNotificationRequired())
  			eNotify(new ENotificationImpl(this, Notification.SET, XtextPackage.ASSIGNMENT__OPERATOR, oldOperator, operator));
  	}
docs: <!-- begin-user-doc -->
  <!-- end-user-doc -->
  @generated