docs: def clear(self):
          """Clear task output: remove value ``budget_inflation_adjusted`` from all :class:`Movie` objects.
          """
          self.mark_incomplete()
          session = client.get_client().create_session()
  
          movies = session.query(models.Movie)
          movies.update({'budget_inflation_adjusted': None})
  
          session.commit()
          session.close()