'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.'

def _escaped_token_to_subtoken_ids(self, escaped_token):

    return [self._subtoken_string_to_id[subtoken] for subtoken in self._escaped_token_to_subtoken_strings(escaped_token)]
