If the response issues an authorization challenge, OkHttp will ask the [`Authenticator`](https://square.github.io/okhttp/4.x/okhttp/okhttp3/-authenticator/) (if one is configured) to satisfy the challenge. If the authenticator supplies a credential, the request is retried with that credential included.

    assertEquals(Sets.<@Nullable String>newHashSet(null, "tree"), keySet.headSet("yahoo"));
    assertEquals(newHashSet("google"), keySet.tailSet("yahoo"));
    assertEquals(newHashSet("tree"), keySet.subSet("ask", "yahoo"));
  }

  @GwtIncompatible // SerializableTester
  public void testExplicitComparatorSerialization() {
    TreeMultimap<@Nullable String, @Nullable Integer> multimap = createPopulate();

    * It contains the `username` and `password` sent.

{* ../../docs_src/security/tutorial006_an_py39.py hl[4,8,12] *}

When you try to open the URL for the first time (or click the "Execute" button in the docs) the browser will ask you for your username and password:

<img src="/img/tutorial/security/image12.png">

## Check the username

Here's a more complete example.

Use a dependency to check if the username and password are correct.

**`krt`** is a very high level wrapper around Kubernetes informers, building on top of `kclient`.

See the [krt README](../../pkg/kube/krt/README.md) for more information.

*krt is currently experimental; please ask maintainers before utilizing it in new areas.*

## Writing Controllers

The `controllers` package offers a variety of helpers for writing controllers.

          currentTask = coordinatorTask
          taskRunner.condition.signalAll()
        }
      }

    // Let the coordinator process its interruption.
    runTasks()
  }

  /** Ask a single task to proceed. Used by the test thread only. */
  fun runNextTask() {
    taskRunner.assertThreadDoesntHoldLock()

    taskRunner.lock.withLock {
      val contextSwitchCountBefore = contextSwitchCount

```
$ inspect -key=ad2b43d847fdb14e54c5836200177f7158b3f745433525f5d23c0e0208e50c9948540b54 inspect.ad2b43d8.enc
Output decrypted to inspect.ad2b43d8.zip
```

    }

    @Override
    public boolean hasNext() {
      return true; // pretend that you have more...
    }

    @Override
    public E next() {
      // ...but throw an unchecked exception when you ask for it.
      if (!iterator.hasNext()) {
        throw new ThrowsAtEndException();
      }
      return iterator.next();
    }

    @Override
    public void remove() {
      iterator.remove();

Contributing
------------

If you are interested in the development of Maven, please consult the
documentation first and afterward you are welcome to join the developers
mailing list to ask questions or discuss new ideas/features/bugs etc.

Take a look into the [contribution guidelines](CONTRIBUTING.md).

License
-------
This code is under the [Apache License, Version 2.0, January 2004][license].

#### Blocking APIs

Blocking APIs are convenient because you get top-to-bottom procedural code without indirection. Network calls work like regular method calls: ask for data and it is returned. If the request fails, you get a stacktrace right where the call was made.

- **Newsletter**: Subscribe to the [Gradle Newsletter](https://newsletter.gradle.org) for news, tutorials, and community highlights.

> **Quick Tip**: New contributors to Gradle projects are encouraged to ask questions in the Slack `#community-support` channel.

---

### 🌱 **Contributing to Gradle**