code: @Override
  	public boolean eIsSet(int featureID) {
  		switch (featureID) {
  			case AfplibPackage.PTD__XPBASE:
  				return XPBASE_EDEFAULT == null ? xpbase != null : !XPBASE_EDEFAULT.equals(xpbase);
  			case AfplibPackage.PTD__YPBASE:
  				return YPBASE_EDEFAULT == null ? ypbase != null : !YPBASE_EDEFAULT.equals(ypbase);
  			case AfplibPackage.PTD__XPUNITVL:
  				return XPUNITVL_EDEFAULT == null ? xpunitvl != null : !XPUNITVL_EDEFAULT.equals(xpunitvl);
  			case AfplibPackage.PTD__YPUNITVL:
  				return YPUNITVL_EDEFAULT == null ? ypunitvl != null : !YPUNITVL_EDEFAULT.equals(ypunitvl);
  			case AfplibPackage.PTD__XPEXTENT:
  				return XPEXTENT_EDEFAULT == null ? xpextent != null : !XPEXTENT_EDEFAULT.equals(xpextent);
  			case AfplibPackage.PTD__YPEXTENT:
  				return YPEXTENT_EDEFAULT == null ? ypextent != null : !YPEXTENT_EDEFAULT.equals(ypextent);
  			case AfplibPackage.PTD__RESERVED:
  				return RESERVED_EDEFAULT == null ? reserved != null : !RESERVED_EDEFAULT.equals(reserved);
  			case AfplibPackage.PTD__CS:
  				return cs != null && !cs.isEmpty();
  		}
  		return super.eIsSet(featureID);
  	}
docs: <!-- begin-user-doc -->
  <!-- end-user-doc -->
  @generated