code: @Override
  	public boolean eIsSet(int featureID) {
  		switch (featureID) {
  			case AfplibPackage.MEASUREMENT_UNITS__XOA_BASE:
  				return XOA_BASE_EDEFAULT == null ? xoaBase != null : !XOA_BASE_EDEFAULT.equals(xoaBase);
  			case AfplibPackage.MEASUREMENT_UNITS__YOA_BASE:
  				return YOA_BASE_EDEFAULT == null ? yoaBase != null : !YOA_BASE_EDEFAULT.equals(yoaBase);
  			case AfplibPackage.MEASUREMENT_UNITS__XOA_UNITS:
  				return XOA_UNITS_EDEFAULT == null ? xoaUnits != null : !XOA_UNITS_EDEFAULT.equals(xoaUnits);
  			case AfplibPackage.MEASUREMENT_UNITS__YOA_UNITS:
  				return YOA_UNITS_EDEFAULT == null ? yoaUnits != null : !YOA_UNITS_EDEFAULT.equals(yoaUnits);
  		}
  		return super.eIsSet(featureID);
  	}
docs: <!-- begin-user-doc -->
  <!-- end-user-doc -->
  @generated