code: def rowsAfterRow(self, rowObject, count):
          
          webID = rowObject['__id__']
          return self.rowsAfterItem(
              self.webTranslator.fromWebID(webID),
              count)
docs: Wrapper around L{rowsAfterItem} which accepts the web ID for a item
          instead of the item itself.
  
          @param rowObject: a dictionary mapping strings to column values, sent
          from the client.  One of those column values must be C{__id__} to
          uniquely identify a row.
  
          @param count: an integer, the number of rows to return.