docs: @Override
  	public void eUnset(int featureID) {
  		switch (featureID) {
  			case XtextPackage.TYPE_REF__METAMODEL:
  				setMetamodel((AbstractMetamodelDeclaration)null);
  				return;
  			case XtextPackage.TYPE_REF__CLASSIFIER:
  				setClassifier((EClassifier)null);
  				return;
  		}
  		super.eUnset(featureID);
  	}