    def collater(self, samples: List[Dict]):
        """Merge a list of samples to form a mini-batch.

        Args:
            samples (List[dict]): samples to collate

        Returns:
            dict: a mini-batch of data
        """
        return self._collate(samples, self.vocab.pad(), self.vocab.eos())
Merge a list of samples to form a mini-batch.

Args:
samples (List[dict]): samples to collate

Returns:
dict: a mini-batch of data
fairseq/data/legacy/masked_lm_dataset.py