code: def last_updated(self, since, queue=None):
          
          return self.search(Queue=queue, order='-LastUpdated', LastUpdatedBy__notexact=self.default_login, LastUpdated__gt=since)
docs: Obtains tickets changed after given date.
  
          :param since: Date as string in form '2011-02-24'
          :keyword queue: Queue where to search
  
          :returns: List of tickets with LastUpdated parameter later than
                    *since* ordered in decreasing order by LastUpdated.
                    Each tickets is dictionary, the same as in
                    :py:meth:`~Rt.get_ticket`.