* #waitersField}.
   */
  private final @Nullable Waiter gasWaiters(Waiter update) {
    return ATOMIC_HELPER.gasWaiters(this, update);
  }

  /**
   * Marks the given node as 'deleted' (null waiter) and then scans the list to unlink all deleted
   * nodes. This is an O(n) operation in the common case (and O(n^2) in the worst), but we are saved
   * by two things.
   *
   * <ul>

👆 💪 📨 & 📨 💱, ✍, & 🎻 💽.

## 🔄 ⚫️

🚥 👆 📁 📛 `main.py`, 🏃 👆 🈸 ⏮️:

<div class="termy">

```console
$ uvicorn main:app --reload

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

📂 👆 🖥 <a href="http://127.0.0.1:8000" class="external-link" target="_blank">http://127.0.0.1:8000</a>.

MinIO deployment starts using default root credentials `minioadmin:minioadmin`. You can test the deployment using the MinIO Console, an embedded web-based object browser built into MinIO Server. Point a web browser running on the host machine to <http://127.0.0.1:9000> and log in with the root credentials. You can use the Browser to create buckets, upload objects, and browse the contents of the MinIO server. You can also connect using any S3-compatible tool, such as the MinIO Client `mc` commandline...

///

## Revisa la documentación automática de la API

Ahora, ejecuta tu aplicación:

<div class="termy">

```console
$ fastapi dev app/main.py

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

### 🚚 `root_path`

🏆 👉, 👆 💪 ⚙️ 📋 ⏸ 🎛 `--root-path` 💖:

<div class="termy">

```console
$ uvicorn main:app --root-path /api/v1

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

🚥 👆 ⚙️ Hypercorn, ⚫️ ✔️ 🎛 `--root-path`.

/// note | 📡 ℹ

🔫 🔧 🔬 `root_path` 👉 ⚙️ 💼.

                                </a>
                                <c:forEach var="item" varStatus="s" items="${pathItems}">
                                    / <span><a
                                        href="${contextPath}/admin/storage/list/${f:u(item.id)}/">${f:h(item.name)}</a></span>
                                </c:forEach>
                                / <c:if test="${editable}"><a data-toggle="modal" data-target="#createDir" href="#"><i

## Tente você mesmo

Se seu arquivo for nomeado `main.py`, execute sua aplicação com:

<div class="termy">

```console
$ fastapi dev main.py

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

Abra seu navegador em: <a href="http://127.0.0.1:8000" class="external-link" target="_blank">http://127.0.0.1:8000</a>.

                                                                                aria-label="Close">
                                                                            <span aria-hidden="true">×</span>
                                                                        </button>
                                                                    </div>

    /** Array of fields that can be highlighted in search results */
    protected String[] highlightedFields;

    /** Array of fields that can be searched against */
    protected String[] searchFields;

    /** Array of fields that can be used for faceted search */
    protected String[] facetFields;

    /** Array of fields that can be used for sorting search results */
    protected String[] sortFields;

{* ../../docs_src/query_params_str_validations/tutorial006_an_py39.py hl[9] *}

### Required, can be `None` { #required-can-be-none }

You can declare that a parameter can accept `None`, but that it's still required. This would force clients to send a value, even if the value is `None`.