code: def generate_cont(self, max_length, state_size,
                        reply_to, backward, dataset):
          
          state = self.get_cont_state(reply_to, backward)
          while True:
              parts = self.generate(state_size, state, dataset, backward)
              if reply_to is not None:
                  if backward:
                      parts = chain(reversed(list(parts)), (reply_to,))
                  else:
                      parts = chain((reply_to,), parts)
              parts = islice(parts, 0, max_length)
              yield self.format(parts)
docs: Generate texts from start/end.
  
          Parameters
          ----------
          max_length : `int` or `None`
              Maximum sentence length.
          state_size : `int`
              State size.
          reply_to : `str` or `None`
              Input string.
          backward : `bool`
              `True` to generate text start.
          dataset: `str`
              Dataset key prefix.
  
          Returns
          -------
          `generator` of `str`
              Generated texts.