code: def compose(self, data):
          
          g = self.__separate(data) if self.__cgr_type in (1, 2, 3, 4, 5, 6) else self.__condense(data)
          g.meta.update(data.meta)
          return g
docs: condense reaction container to CGR. see init for details about cgr_type
  
          :param data: ReactionContainer
          :return: CGRContainer