docs: def get_queryset(self):
          """Query for the most voted messages sorting by the sum of
          voted and after by date."""
  
          queryset = super(MostVotedManager, self).get_queryset()
  
          sql = """
              SELECT
                  count(sav.id)
              FROM
                  colab_superarchives_vote AS sav
              WHERE
                  colab_superarchives_message.id = sav.message_id
          """
  
          messages = queryset.extra(
              select={
                  'vote_count': sql,
              }
          )
          return messages.order_by('-vote_count', 'received_time')