Formatting Fix

        sequences = _add_sequence(sequences, sequence)  # Add last sequence

        return sequences

      def _add_sequence(sequences: np.ndarray, sequence: np.ndarray) -> np.ndarray:

      def _add_sequence(sequences: np.ndarray,

                        sequence: np.ndarray) -> np.ndarray:

        # Handle empty sequence

        if sequence is None or len(sequence) <= 0:

          # TODO log attempts to add empty sequences every shard