def METHOD_NAME():
    configuration = HmacMaskingConfiguration()
    masker = HmacMaskingStrategy(configuration)
    expected = None
    secret_key = MaskingSecretCache[str](
        secret="test_key",
        masking_strategy=HmacMaskingStrategy.name,
        secret_type=SecretType.key,
    )
    cache_secret(secret_key, request_id)
    secret_salt = MaskingSecretCache[str](
        secret="test_salt",
        masking_strategy=HmacMaskingStrategy.name,
        secret_type=SecretType.salt,
    )
    cache_secret(secret_salt, request_id)
    masked = masker.mask(None, request_id)
    assert expected == masked
    clear_cache_secrets(request_id)