fun fieldAndTwoFiles() {
    val expected =
      """
      |--AaB03x
      |Content-Disposition: form-data; name="submit-name"
      |
      |Larry
      |--AaB03x
      |Content-Disposition: form-data; name="files"
      |Content-Type: multipart/mixed; boundary=BbC04y
      |
      |--BbC04y
      |Content-Disposition: file; filename="file1.txt"
      |Content-Type: text/plain; charset=utf-8
      |

            }
          }

        val headers =
          Headers.Builder()
            .addUnsafeNonAscii("Content-Disposition", disposition)
            .build()

        return create(headers, body)
      }
    }
  }

  class Builder
    @JvmOverloads
    constructor(boundary: String = UUID.randomUUID().toString()) {
      private val boundary: ByteString = boundary.encodeUtf8()

    assertThat(brownPart.headers).isEqualTo(
      headersOf(
        "Content-Disposition",
        "form-data; name=\"color\"",
      ),
    )
    assertThat(brownPart.body.readUtf8()).isEqualTo("Brown")

    val foxPart = reader.nextPart()!!
    assertThat(foxPart.headers).isEqualTo(
      headersOf(
        "Content-Disposition",
        "form-data; name=\"animal\"; filename=\"fox.txt\"",
      ),
    )

            putValue(data, "Content-MD5", message.getContentMD5());
            putValue(data, "Description", message.getDescription());
            putValue(data, "Disposition", message.getDisposition());
            putValue(data, "Encoding", message.getEncoding());
            putValue(data, "File-Name", message.getFileName());
            putValue(data, "From", message.getFrom());

var startsWithConds = map[string]bool{
	"$acl":                     true,
	"$bucket":                  false,
	"$cache-control":           true,
	"$content-type":            true,
	"$content-disposition":     true,
	"$content-encoding":        true,
	"$expires":                 true,
	"$key":                     true,
	"$success_action_redirect": true,
	"$redirect":                true,

	AmzBucketRegion    = "X-Amz-Bucket-Region"
	ServerInfo         = "Server"
	RetryAfter         = "Retry-After"
	Location           = "Location"
	CacheControl       = "Cache-Control"
	ContentDisposition = "Content-Disposition"
	Authorization      = "Authorization"
	Action             = "Action"
	Range              = "Range"
)

// Non standard S3 HTTP response constants
const (
	XCache       = "X-Cache"

他のレスポンスタイプとは異なる引数のセットを受け取りインスタンス化します。

* `path` - ストリームするファイルのファイルパス。
* `headers` - 含めたい任意のカスタムヘッダーの辞書。
* `media_type` - メディアタイプを示す文字列。セットされなかった場合は、ファイル名やパスからメディアタイプが推察されます。
* `filename` - セットされた場合、レスポンスの `Content-Disposition` に含まれます。

ファイルレスポンスには、適切な `Content-Length` 、 `Last-Modified` 、 `ETag` ヘッダーが含まれます。

```Python hl_lines="2  10"
{!../../docs_src/custom_response/tutorial009.py!}
```

## デフォルトレスポンスクラス

* `media_type` – Ein String, der den Medientyp angibt. Wenn nicht gesetzt, wird der Dateiname oder Pfad verwendet, um auf einen Medientyp zu schließen.
* `filename` – Wenn gesetzt, wird das in der `Content-Disposition` der Response eingefügt.

Datei-Responses enthalten die entsprechenden `Content-Length`-, `Last-Modified`- und `ETag`-Header.

```Python hl_lines="2  10"
{!../../docs_src/custom_response/tutorial009.py!}
```

  public static final String AGE = "Age";
  /** The HTTP {@code Allow} header field name. */
  public static final String ALLOW = "Allow";
  /** The HTTP {@code Content-Disposition} header field name. */
  public static final String CONTENT_DISPOSITION = "Content-Disposition";
  /** The HTTP {@code Content-Encoding} header field name. */
  public static final String CONTENT_ENCODING = "Content-Encoding";

	"delete",
	"encryption",
	"legal-hold",
	"lifecycle",
	"location",
	"logging",
	"notification",
	"partNumber",
	"policy",
	"requestPayment",
	"response-cache-control",
	"response-content-disposition",
	"response-content-encoding",
	"response-content-language",
	"response-content-type",
	"response-expires",
	"retention",
	"select",
	"select-type",
	"tagging",
	"torrent",
	"uploadId",
	"uploads",