code: @Override
  	public boolean eIsSet(int featureID) {
  		switch (featureID) {
  			case AfplibPackage.OBJECT_ORIGIN_IDENTIFIER__SYSTEM:
  				return SYSTEM_EDEFAULT == null ? system != null : !SYSTEM_EDEFAULT.equals(system);
  			case AfplibPackage.OBJECT_ORIGIN_IDENTIFIER__SYS_ID:
  				return SYS_ID_EDEFAULT == null ? sysID != null : !SYS_ID_EDEFAULT.equals(sysID);
  			case AfplibPackage.OBJECT_ORIGIN_IDENTIFIER__MED_ID:
  				return MED_ID_EDEFAULT == null ? medID != null : !MED_ID_EDEFAULT.equals(medID);
  			case AfplibPackage.OBJECT_ORIGIN_IDENTIFIER__DSID:
  				return DSID_EDEFAULT == null ? dsid != null : !DSID_EDEFAULT.equals(dsid);
  		}
  		return super.eIsSet(featureID);
  	}
docs: <!-- begin-user-doc -->
  <!-- end-user-doc -->
  @generated