code: @Override
  	public boolean eIsSet(int featureID) {
  		switch (featureID) {
  			case AfplibPackage.IDD__UNITBASE:
  				return UNITBASE_EDEFAULT == null ? unitbase != null : !UNITBASE_EDEFAULT.equals(unitbase);
  			case AfplibPackage.IDD__XRESOL:
  				return XRESOL_EDEFAULT == null ? xresol != null : !XRESOL_EDEFAULT.equals(xresol);
  			case AfplibPackage.IDD__YRESOL:
  				return YRESOL_EDEFAULT == null ? yresol != null : !YRESOL_EDEFAULT.equals(yresol);
  			case AfplibPackage.IDD__XSIZE:
  				return XSIZE_EDEFAULT == null ? xsize != null : !XSIZE_EDEFAULT.equals(xsize);
  			case AfplibPackage.IDD__YSIZE:
  				return YSIZE_EDEFAULT == null ? ysize != null : !YSIZE_EDEFAULT.equals(ysize);
  			case AfplibPackage.IDD__SDFS:
  				return sdfs != null && !sdfs.isEmpty();
  		}
  		return super.eIsSet(featureID);
  	}
docs: <!-- begin-user-doc -->
  <!-- end-user-doc -->
  @generated