import com.microsoft.aad.adal4j.AuthenticationResult;
import com.microsoft.aad.adal4j.UserInfo;

public class AzureAdCredential implements LoginCredential, FessCredential {

    private static final Logger logger = LogManager.getLogger(AzureAdCredential.class);

    private final AuthenticationResult authResult;

    public AzureAdCredential(final AuthenticationResult authResult) {
        this.authResult = authResult;

            final AuthenticationContext context = new AuthenticationContext(authority, true, service);
            final Future<AuthenticationResult> future =
                    context.acquireTokenByRefreshToken(refreshToken, new ClientCredential(getClientId(), getClientSecret()), null, null);
            final AuthenticationResult result = future.get(acquisitionTimeout, TimeUnit.MILLISECONDS);
            if (result == null) {