code: @Override
  	public boolean eIsSet(int featureID) {
  		switch (featureID) {
  			case AfplibPackage.GCBOX__RES:
  				return RES_EDEFAULT == null ? res != null : !RES_EDEFAULT.equals(res);
  			case AfplibPackage.GCBOX__XPOS1:
  				return XPOS1_EDEFAULT == null ? xpos1 != null : !XPOS1_EDEFAULT.equals(xpos1);
  			case AfplibPackage.GCBOX__YPOS1:
  				return YPOS1_EDEFAULT == null ? ypos1 != null : !YPOS1_EDEFAULT.equals(ypos1);
  			case AfplibPackage.GCBOX__HAXIS:
  				return HAXIS_EDEFAULT == null ? haxis != null : !HAXIS_EDEFAULT.equals(haxis);
  			case AfplibPackage.GCBOX__VAXIS:
  				return VAXIS_EDEFAULT == null ? vaxis != null : !VAXIS_EDEFAULT.equals(vaxis);
  		}
  		return super.eIsSet(featureID);
  	}
docs: <!-- begin-user-doc -->
  <!-- end-user-doc -->
  @generated