code: def mark_all_as_done(self, **kwargs):
          
          result = self.gitlab.http_post('/todos/mark_as_done', **kwargs)
          try:
              return int(result)
          except ValueError:
              return 0
docs: Mark all the todos as done.
  
          Args:
              **kwargs: Extra options to send to the server (e.g. sudo)
  
          Raises:
              GitlabAuthenticationError: If authentication is not correct
              GitlabTodoError: If the server failed to perform the request
  
          Returns:
              int: The number of todos maked done