code: boolean isAggregatedQuery()
      {
          if (kunderaQuery.getSelectStatement() != null)
          {
              Expression exp = ((SelectClause) kunderaQuery.getSelectStatement().getSelectClause()).getSelectExpression();
              return AggregateFunction.class.isAssignableFrom(exp.getClass());
          }
          else
          {
              return false;
          }
      }
docs: Checks if is aggregated query.
  
  @return true, if is aggregated query