code: def process(self, batch, *args, **kwargs):
          
          if self.postprocessing is not None:
              batch = self.postprocessing(batch)
          return batch
docs: Process a list of examples to create a batch.
  
          Postprocess the batch with user-provided Pipeline.
  
          Args:
              batch (list(object)): A list of object from a batch of examples.
          Returns:
              object: Processed object given the input and custom
              postprocessing Pipeline.