### Question:
NoneResponseTypeHandler implements ResponseTypeHandler { public Map.Entry<String, Token> handle(String tokenType, Set<String> scope, ResourceOwner resourceOwner, String clientId, String redirectUri, String nonce, OAuth2Request request, String codeChallenge, String codeChallengeMethod) { return null; }  Map.Entry<String, Token> handle(String tokenType, Set<String> scope,
            ResourceOwner resourceOwner, String clientId, String redirectUri, String nonce, OAuth2Request request,
                                           String codeChallenge, String codeChallengeMethod); OAuth2Constants.UrlLocation getReturnLocation();  }### Answer:
@Test public void handleShouldReturnNull() { assertNull(responseTypeHandler.handle(null, null, null, null, null, null, null, null, null)); }