def METHOD_NAME(cls):
    domain = b'localhost'
    key = jose.JWK.load(test_util.load_vector('rsa512_key.pem'))
    http_01 = achallenges.KeyAuthorizationAnnotatedChallenge(
        challb=acme_util.HTTP01_P, domain=domain, account_key=key)
    return [http_01]