我的应用程序中有一个方法，可以使用Microsoft Graph REST API在Azure AD B2C上创建用户，我想模拟GraphServiceClient来进行一些测试。
创建用户的Java方法：

public User createUser(User user) throws ClientException {
        final ClientSecretCredential clientSecretCredential = new ClientSecretCredentialBuilder()
                .clientId(clientId)
                .clientSecret(clientSecret)
                .tenantId(tenantId)
                .build();

        final TokenCredentialAuthProvider tokenCredentialAuthProvider = new TokenCredentialAuthProvider(Arrays.asList(scope), clientSecretCredential);

        GraphServiceClient graphClient = GraphServiceClient.builder()
                .authenticationProvider(tokenCredentialAuthProvider)
                .buildClient();

        user.passwordPolicies = "DisablePasswordExpiration"; // optional
        PasswordProfile passwordProfile = new PasswordProfile();
        passwordProfile.forceChangePasswordNextSignIn = true; // false if the user does not need to change password
        passwordProfile.password = "xWwvJ]6NMw+bWH-d";
        user.passwordProfile = passwordProfile;

        return graphClient.users()
                .buildRequest()
                .post(user);
    }

字符串
我如何模拟返回一个用户，就像我们使用RestTemplate和MockRestServiceServer一样