def _escaped_token_to_subtoken_ids(self, escaped_token):
    """Converts an escaped token string to a list of subtoken IDs.

    Args:
      escaped_token: An escaped token as a unicode string.
    Returns:
      A list of subtoken IDs as integers.
    """
    return [
        self._subtoken_string_to_id[subtoken]
        for subtoken in self._escaped_token_to_subtoken_strings(escaped_token)
    ]
Converts an escaped token string to a list of subtoken IDs.

    Args:
      escaped_token: An escaped token as a unicode string.
    Returns:
      A list of subtoken IDs as integers.