code: def _GenerateSummary(self):
      
      items = []
      if self._notices:
        items.append('notices: %d' % self._notice_count)
      if self._dataset_errors:
        items.append('errors: %d' % self._error_count)
      if self._dataset_warnings:
        items.append('warnings: %d' % self._warning_count)
  
      if items:
        return '<p><span class="fail">%s</span></p>' % '<br>'.join(items)
      else:
        return '<p><span class="pass">feeds merged successfully</span></p>'
docs: Generate a summary of the warnings and errors.
  
      Returns:
        The generated HTML as a string.