### Question:
WebAuthn4jAuthenticatorFactory implements AuthenticatorFactory { @Override public String getId() { return PROVIDER_ID; }  @Override String getDisplayType(); @Override String getReferenceCategory(); @Override boolean isConfigurable(); @Override AuthenticationExecutionModel.Requirement[] getRequirementChoices(); @Override boolean isUserSetupAllowed(); @Override String getHelpText(); @Override List<ProviderConfigProperty> getConfigProperties(); @Override Authenticator create(KeycloakSession session); @Override void init(Config.Scope config); @Override void postInit(KeycloakSessionFactory factory); @Override void close(); @Override String getId(); static final String PROVIDER_ID; }### Answer:
@Test public void test_getId() throws Exception { WebAuthn4jAuthenticatorFactory factory = new WebAuthn4jAuthenticatorFactory(); Assert.assertEquals(WebAuthn4jAuthenticatorFactory.PROVIDER_ID, factory.getId()); }