code: @Override
  	public boolean eIsSet(int featureID) {
  		switch (featureID) {
  			case AfplibPackage.IMAGE_SIZE__UNITBASE:
  				return UNITBASE_EDEFAULT == null ? unitbase != null : !UNITBASE_EDEFAULT.equals(unitbase);
  			case AfplibPackage.IMAGE_SIZE__HRESOL:
  				return HRESOL_EDEFAULT == null ? hresol != null : !HRESOL_EDEFAULT.equals(hresol);
  			case AfplibPackage.IMAGE_SIZE__VRESOL:
  				return VRESOL_EDEFAULT == null ? vresol != null : !VRESOL_EDEFAULT.equals(vresol);
  			case AfplibPackage.IMAGE_SIZE__HSIZE:
  				return HSIZE_EDEFAULT == null ? hsize != null : !HSIZE_EDEFAULT.equals(hsize);
  			case AfplibPackage.IMAGE_SIZE__VSIZE:
  				return VSIZE_EDEFAULT == null ? vsize != null : !VSIZE_EDEFAULT.equals(vsize);
  		}
  		return super.eIsSet(featureID);
  	}
docs: <!-- begin-user-doc -->
  <!-- end-user-doc -->
  @generated