code: def get_dict_for_mongodb_queries(self):
          
          d = {}
          return d
          # TODO
          all_structures = [task.input.structure for task in self.iflat_tasks()]
          all_pseudos = [task.input.pseudos for task in self.iflat_tasks()]
docs: This function returns a dictionary with the attributes that will be
          put in the mongodb document to facilitate the query.
          Subclasses may want to replace or extend the default behaviour.