code: @Override
  	public boolean eIsSet(int featureID) {
  		switch (featureID) {
  			case AfplibPackage.GSAP__P:
  				return P_EDEFAULT == null ? p != null : !P_EDEFAULT.equals(p);
  			case AfplibPackage.GSAP__Q:
  				return Q_EDEFAULT == null ? q != null : !Q_EDEFAULT.equals(q);
  			case AfplibPackage.GSAP__R:
  				return R_EDEFAULT == null ? r != null : !R_EDEFAULT.equals(r);
  			case AfplibPackage.GSAP__S:
  				return S_EDEFAULT == null ? s != null : !S_EDEFAULT.equals(s);
  		}
  		return super.eIsSet(featureID);
  	}
docs: <!-- begin-user-doc -->
  <!-- end-user-doc -->
  @generated