docs: @Override
  	public void eUnset(int featureID) {
  		switch (featureID) {
  			case XtextPackage.ACTION__TYPE:
  				setType((TypeRef)null);
  				return;
  			case XtextPackage.ACTION__FEATURE:
  				setFeature(FEATURE_EDEFAULT);
  				return;
  			case XtextPackage.ACTION__OPERATOR:
  				setOperator(OPERATOR_EDEFAULT);
  				return;
  		}
  		super.eUnset(featureID);
  	}