public override void EnterPivotExpression(QueryLanguageParser.PivotExpressionContext context)
        {
            var pivotType = ParserHelper.GetPivotType(context.pivotType?.Type ?? -1);

            var pivotDefinition = ParserHelper.GetPivot(pivotType);

            CurrentProcessingQueryNode.PivotData = new PivotData
            {
                PivotDefinition = pivotDefinition
            };

            CurrentProcessingQueryNode.Name = pivotType.ToString();

            base.EnterPivotExpression(context);
        }
 public override void ExitPivotExpression(QueryLanguageParser.PivotExpressionContext context)
 {
     base.ExitPivotExpression(context);
 }