code: @Override
  	public void eUnset(int featureID) {
  		switch (featureID) {
  			case AfplibPackage.PGPRG__RG_LENGTH:
  				setRGLength(RG_LENGTH_EDEFAULT);
  				return;
  			case AfplibPackage.PGPRG__XM_OSET:
  				setXmOset(XM_OSET_EDEFAULT);
  				return;
  			case AfplibPackage.PGPRG__YM_OSET:
  				setYmOset(YM_OSET_EDEFAULT);
  				return;
  			case AfplibPackage.PGPRG__PGORIENT:
  				setPGorient(PGORIENT_EDEFAULT);
  				return;
  			case AfplibPackage.PGPRG__SHSIDE:
  				setSHside(SHSIDE_EDEFAULT);
  				return;
  			case AfplibPackage.PGPRG__PG_FLGS:
  				setPgFlgs(PG_FLGS_EDEFAULT);
  				return;
  			case AfplibPackage.PGPRG__PM_CID:
  				setPMCid(PM_CID_EDEFAULT);
  				return;
  		}
  		super.eUnset(featureID);
  	}
docs: <!-- begin-user-doc -->
  <!-- end-user-doc -->
  @generated