code: @Override
    public boolean eIsSet(int featureID)
    {
      switch (featureID)
      {
        case SimpleAntlrPackage.RULE_CALL__RULE:
          return RULE_EDEFAULT == null ? rule != null : !RULE_EDEFAULT.equals(rule);
        case SimpleAntlrPackage.RULE_CALL__ARGUMENTS:
          return arguments != null && !arguments.isEmpty();
      }
      return super.eIsSet(featureID);
    }
docs: <!-- begin-user-doc -->
  <!-- end-user-doc -->
  @generated