### Question:
UsernamePasswordAuthenticatorFactory extends AbstractWebHookAuthenticatorFactory implements WebHookAuthenticatorFactory { @Override public WebHookAuthenticator getAuthenticatorInstance() { return new UsernamePasswordAuthenticator(); } UsernamePasswordAuthenticatorFactory(WebHookAuthenticatorProvider provider); @Override String getName(); @Override String getDescription(); @Override WebHookAuthenticator getAuthenticatorInstance();  }### Answer:
@Test public void testGetAuthenticatorInstance() { UsernamePasswordAuthenticatorFactory authenticatorFactory = new UsernamePasswordAuthenticatorFactory(provider); authenticatorFactory.register(); WebHookAuthenticator factory = provider.getAuthenticator("userpass"); WebHookAuthenticator factory2 = provider.getAuthenticator("userpass"); assertTrue(factory instanceof UsernamePasswordAuthenticator); assertTrue(factory2 instanceof UsernamePasswordAuthenticator); assertNotSame(factory, factory2); }