docs: function buildOrderingPartial(requestQuery) {
          var query = [];
          var l = _u.isArray(requestQuery.order) ? requestQuery.order.length : 0;
          for (var fdx = 0; fdx < l; ++fdx) {
              var order = requestQuery.order[fdx],
                  column = requestQuery.columns[order.column];
  
              if (column.orderable === 'true' && column.name) {
                  query.push(column.name + " " + order.dir);
              }
          }
          if (query.length)
              return " ORDER BY " + query.join(", ");
          return "";
      }