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.

def process(self, batch, *args, **kwargs):
        """ 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.
        """
        if self.postprocessing is not None:
            batch = self.postprocessing(batch)
        return batch