docs: def constructRows(self, items):
          """
          Build row objects that are serializable using Athena for sending to the
          client.
  
          @param items: an iterable of objects compatible with my columns'
          C{extractValue} methods.
  
          @return: a list of dictionaries, where each dictionary has a string key
          for each column name in my list of columns.
          """
          rows = []
          for item in items:
              row = dict((colname, col.extractValue(self, item))
                         for (colname, col) in self.columns.iteritems())
              link = self.linkToItem(item)
              if link is not None:
                  row[u'__id__'] = link
              rows.append(row)
  
          return rows