code: @Override
    public void eUnset(int featureID)
    {
      switch (featureID)
      {
        case SimpleAntlrPackage.PREDICATED__PREDICATE:
          setPredicate((RuleElement)null);
          return;
        case SimpleAntlrPackage.PREDICATED__ELEMENT:
          setElement((RuleElement)null);
          return;
      }
      super.eUnset(featureID);
    }
docs: <!-- begin-user-doc -->
  <!-- end-user-doc -->
  @generated