Pydantic, мощь которого используется в FastAPI для валидации и сериализации, имеет специальное поведение для `Optional` или `Union[Something, None]` без значения по умолчанию. Вы можете узнать об этом больше в документации Pydantic, раздел <a href="https://docs.pydantic.dev/latest/concepts/models/#required-optional-fields" class="external-link" target="_blank">Обязательные Опциональные поля</a>.

///

## Множество значений для query-параметра

 * assigned characters, including important CJK characters and emoji.
 *
 * <p>Supplementary characters are <a
 * href="https://docs.oracle.com/javase/8/docs/api/java/lang/Character.html#supplementary">encoded
 * into a {@code String} using surrogate pairs</a>, and a {@code CharMatcher} treats these just as

index.backup.log.load.timeout=60000

# logging

# Application packages for logging.
logging.app.packages=org.codelibs,org.dbflute,org.lastaflute
# Whether to enable search docs logging.
logging.search.docs.enabled=true
# Fields to log for search docs.
logging.search.docs.fields=filetype,created,click_count,title,doc_id,url,score,site,filename,host,digest,boost,mimetype,favorite_count,_id,lang,last_modified,content_length,timestamp

     * either case, no one needs to read `futures` for cancellation purposes later. (And
     * cancellation purposes are the main reason to access `futures`, as discussed in its docs.)
     */
    this.futures = null;
  }

  enum ReleaseResourcesReason {
    OUTPUT_FUTURE_DONE,
    ALL_INPUT_FUTURES_PROCESSED,
  }

  /**

**リクエスト** ボディはクライアントによってAPIへ送られます。**レスポンス** ボディはAPIがクライアントに送るデータです。

APIはほとんどの場合 **レスポンス** ボディを送らなければなりません。しかし、クライアントは必ずしも **リクエスト** ボディを送らなければいけないわけではありません。

**リクエスト** ボディを宣言するために <a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic</a> モデルを使用します。そして、その全てのパワーとメリットを利用します。

/// info | 情報

データを送るには、`POST` (もっともよく使われる)、`PUT`、`DELETE` または `PATCH` を使うべきです。

    ```

Note that this was originally released on 2020-10-06 as 4.10.0-RC1. The only change from that
release is the version name.


[GraalVM]: https://www.graalvm.org/
[Gradle module metadata]: https://docs.gradle.org/current/userguide/publishing_gradle_module_metadata.html
[Ktor]: https://ktor.io/
[Retrofit]: https://square.github.io/retrofit/

// Trims away `aws-chunked` from the content-encoding header if present.
// Streaming signature clients can have custom content-encoding such as
// `aws-chunked,gzip` here we need to only save `gzip`.
// For more refer http://docs.aws.amazon.com/AmazonS3/latest/API/sigv4-streaming.html
func trimAwsChunkedContentEncoding(contentEnc string) (trimmedContentEnc string) {
	if contentEnc == "" {
		return contentEnc
	}
	var newEncs []string

  // but essentially each line will be a call to a Preconditions method that, but for a documented
  // change would be a compiler error.
  // See http://docs.oracle.com/javase/specs/jls/se7/html/jls-15.html#jls-15.12.2 for the spec on
  // how javac selects overloads
  @SuppressWarnings("null")
  public void overloadSelection() {
    Boolean boxedBoolean = null;

  // but essentially each line will be a call to a Preconditions method that, but for a documented
  // change would be a compiler error.
  // See http://docs.oracle.com/javase/specs/jls/se7/html/jls-15.html#jls-15.12.2 for the spec on
  // how javac selects overloads
  @SuppressWarnings("null")
  public void overloadSelection() {
    Boolean boxedBoolean = null;

///

/// tip | Tipp