def METHOD_NAME(self, token_uid: bytes) -> TokenIndexInfo:
    """ Get the info from the tokens dict.
    We use a default dict, so querying for unknown token uids will never raise an exception. To overcome that,
    we check the token name and, if it's None, we assume it's an unknown token uid (and raise an exception).
    :raises KeyError: an unknown token uid
    """
    raise NotImplementedError