Agora, execute o comando `fastapi`:

<div class="termy">

```console
$ fastapi dev

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

</div>

E abra a documentação em [http://127.0.0.1:8000/docs](http://127.0.0.1:8000/docs).

然後你可以將環境變數 `OPENAPI_URL` 設為空字串，以停用 OpenAPI（包含文件 UI），如下：

<div class="termy">

```console
$ OPENAPI_URL= uvicorn main:app

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

</div>

之後若你造訪 `/openapi.json`、`/docs` 或 `/redoc`，會看到如下的 `404 Not Found` 錯誤：

```JSON
{
    "detail": "Not Found"
}

Now, run the `fastapi` command:

<div class="termy">

```console
$ fastapi dev

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

</div>

And open the docs at [http://127.0.0.1:8000/docs](http://127.0.0.1:8000/docs).

You will see the automatic API docs for the main app, including only its own _path operations_:

                    .longOpt("activate-profiles")
                    .desc(
                            "Comma-delimited list of profiles to activate. Don't use spaces between commas or double quote the full list. Prefixing a profile with ! excludes it, and ? marks it as optional.")
                    .hasArg()
                    .get());
            options.addOption(Option.builder(SUPPRESS_SNAPSHOT_UPDATES)

     <span style="background-color:#007166"><font color="#D3D7CF"> INFO </font></span>  Uvicorn running on <font color="#729FCF"><u style="text-decoration-style:solid">http://0.0.0.0:8000</u></font> <b>(</b>Press CTRL+C to
             quit<b>)</b>
     <span style="background-color:#007166"><font color="#D3D7CF"> INFO </font></span>  Started parent process <b>[</b><font color="#34E2E2"><b>27365</b></font><b>]</b>

    @Override
    protected String asEsIndex() {
        if (indexName == null) {
            final String name = ComponentUtil.getFessConfig().getIndexLogIndex();
            indexName = super.asEsIndex().replaceFirst(Pattern.quote("fess_log"), name);
        }
        return indexName;
    }

    @Override
    protected LocalDateTime toLocalDateTime(final Object value) {
        if (value != null) {
            try {

	}

	key := envTokens[0]
	val := envTokens[1]

	// Remove quotes from the value if found
	if len(val) >= 2 {
		quote := val[0]
		if (quote == '"' || quote == '\'') && val[len(val)-1] == quote {
			val = val[1 : len(val)-1]
		}
	}

	return envKV{
		Key:   key,
		Value: val,
	}, nil
}

Führen Sie nun den Befehl `fastapi` aus:

<div class="termy">

```console
$ fastapi dev

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

</div>

Und öffnen Sie die Dokumentation unter [http://127.0.0.1:8000/docs](http://127.0.0.1:8000/docs).

接着，你可以通过把环境变量 `OPENAPI_URL` 设为空字符串来禁用 OpenAPI（包括文档 UI），例如：

<div class="termy">

```console
$ OPENAPI_URL= uvicorn main:app

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

</div>

然后如果你访问 `/openapi.json`、`/docs` 或 `/redoc`，就会得到一个 `404 Not Found` 错误，例如：

```JSON
{
    "detail": "Not Found"
}

    @Override
    protected String asEsIndex() {
        if (indexName == null) {
            final String name = ComponentUtil.getFessConfig().getIndexConfigIndex();
            indexName = super.asEsIndex().replaceFirst(Pattern.quote("fess_config"), name);
        }
        return indexName;
    }

    @Override
    public OptionalEntity<ScheduledJob> selectByPK(final String id) {
        Exception lastException = null;