這份文件會出現在你的 API 的 Swagger UI `/docs`，讓外部開發者知道該如何建置「外部 API」。

這個範例不會實作回呼本身（那可能就只是一行程式碼），只會實作文件的部分。

/// tip

實際的回呼就是一個 HTTP 請求。

當你自己實作回呼時，可以使用像是 [HTTPX](https://www.python-httpx.org) 或 [Requests](https://requests.readthedocs.io/)。

///

## 撰寫回呼的文件化程式碼 { #write-the-callback-documentation-code }

這段程式碼在你的應用中不會被執行，我們只需要它來「文件化」說明那個「外部 API」應該長什麼樣子。

不過，你已經知道如何用 **FastAPI** 輕鬆為 API 建立自動文件。

        // Execute
        final InvalidQueryException exception = new InvalidQueryException(messageCode, message);

        // Verify that exception is serializable
        assertTrue(exception instanceof java.io.Serializable);
    }

    @Test
    public void test_longMessage() {
        // Setup - test with a very long message
        final StringBuilder longMessageBuilder = new StringBuilder();

    }

    // Test serialization
    public void xtest_serialization() {
        // Verify that serialVersionUID is defined
        assertTrue(fessEnv instanceof java.io.Serializable);

        // Test that the SimpleImpl class can be instantiated
        FessEnv.SimpleImpl newInstance = new FessEnv.SimpleImpl();
        assertNotNull(newInstance);

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.internal.connection

import java.io.IOException
import java.net.HttpURLConnection
import java.net.Socket
import java.net.UnknownServiceException
import okhttp3.Address
import okhttp3.ConnectionSpec
import okhttp3.HttpUrl
import okhttp3.Protocol

import com.google.common.base.Function;
import com.google.common.base.Supplier;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.ListenableFutureTask;
import java.io.Serializable;
import java.util.Map;
import java.util.concurrent.Executor;

/**
 * Computes or retrieves values, based on a key, for use in populating a {@link LoadingCache}.
 *

 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package jcifs.smb1.ntlmssp;

import java.io.IOException;
import java.net.UnknownHostException;

import jcifs.smb1.Config;
import jcifs.smb1.netbios.NbtAddress;

/**
 * Represents an NTLMSSP Type-2 message.
 */

 * under the License.
 */
package org.apache.maven.classrealm;

import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;

import java.io.File;
import java.net.MalformedURLException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;

/// tip

The actual callback is just an HTTP request.

When implementing the callback yourself, you could use something like [HTTPX](https://www.python-httpx.org) or [Requests](https://requests.readthedocs.io/).

///

## Write the callback documentation code { #write-the-callback-documentation-code }

This code won't be executed in your app, we only need it to *document* how that *external API* should look like.

## Detalles Técnicos { #technical-details }

Solo un detalle técnico para los nerds curiosos. 🤓

Por debajo, en la especificación técnica ASGI, esto es parte del [Protocolo de Lifespan](https://asgi.readthedocs.io/en/latest/specs/lifespan.html), y define eventos llamados `startup` y `shutdown`.

/// info | Información

다음을 포함해 여러 대안이 있습니다:

* [Uvicorn](https://www.uvicorn.dev/): 고성능 ASGI 서버.
* [Hypercorn](https://hypercorn.readthedocs.io/): HTTP/2 및 Trio 등 여러 기능과 호환되는 ASGI 서버.
* [Daphne](https://github.com/django/daphne): Django Channels를 위해 만들어진 ASGI 서버.
* [Granian](https://github.com/emmett-framework/granian): Python 애플리케이션을 위한 Rust HTTP 서버.