Added type hinting

        # (X, y, w, ids)

        yield X, None, None, ids

    def _read_file(input_file: str, auto_add_annotations: bool = False):

    def _read_file(input_file: str):

      """

      Convert the FASTA file to a numpy array of FASTA-format strings.

      """

          # TODO log attempts to add empty sequences every shard

          return np.array([])

        # Annotate start/stop of sequence

        if auto_add_annotations:

        if self.auto_add_annotations:

          sequence = np.insert(sequence, 0, "[CLS]")

          sequence = np.append(sequence, "[SEP]")

        new_sequence = ''.join(sequence)