@Override
  public void eUnset(int featureID)
  {
    switch (featureID)
    {
      case SimpleAntlrPackage.NOT_EXPRESSION__VALUE:
        setValue((Expression)null);
        return;
    }
    super.eUnset(featureID);
  }
@ Override public void eUnset ( int featureID ) { switch ( featureID ) { case SimpleAntlrPackage . NOT_EXPRESSION__VALUE : setValue ( ( Expression ) null ) ; return ; } super . eUnset ( featureID ) ; }
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@generated