code: def save(self):
          
          data = super().save()
          data['block_size'] = list(self.block_size)
          data['block_sentences'] = self.block_sentences
          data['traverse_image'] = self.traverse_image.save()
          data['traverse_block'] = self.traverse_block.save()
          return data
docs: Convert to JSON.
  
          Returns
          -------
          `dict`
              JSON data.