private Action buildAction() {
        return new YubiKeyAccountSaveRegistrationAction(
            new OpenYubiKeyAccountRegistry(new AcceptAllYubiKeyAccountValidator()), tenantExtractor);
    }
This is {@link YubiKeyAccountSaveRegistrationActionTests}.

@author Misagh Moayyed
@since 5.3.0
support/cas-server-support-yubikey-core/src/test/java/org/apereo/cas/adaptors/yubikey/web/flow/YubiKeyAccountSaveRegistrationActionTests.java