docs: @Override
  	public void eUnset(int featureID) {
  		switch (featureID) {
  			case XtextPackage.ABSTRACT_METAMODEL_DECLARATION__EPACKAGE:
  				setEPackage((EPackage)null);
  				return;
  			case XtextPackage.ABSTRACT_METAMODEL_DECLARATION__ALIAS:
  				setAlias(ALIAS_EDEFAULT);
  				return;
  		}
  		super.eUnset(featureID);
  	}