def METHOD_NAME(self, *, key: str) -> List[str]:
    """List fingerprints found in specified key.
    Do this by importing the key into a temporary keyring,
    then querying the keyring for fingerprints.
    :param key: Key data (string) to parse.
    :returns: List of key fingerprints/IDs.
    """
    with tempfile.NamedTemporaryFile(suffix="keyring") as temp_file:
        return (
            gnupg.GPG(keyring=temp_file.name).import_keys(key_data=key).fingerprints
        )