しかし、`Response`（または `JSONResponse` のような任意のサブクラス）を直接返す場合、（`response_model` を宣言していても）データは自動的に変換されず、ドキュメントも自動生成されません（例えば、生成されるOpenAPIの一部としてHTTPヘッダー `Content-Type` に特定の「メディアタイプ」を含めるなど）。

一方で、*path operation デコレータ* の `response_class` パラメータを使って、使用したい `Response`（`Response` の任意のサブクラス）を宣言することもできます。

*path operation 関数* から返したコンテンツは、その `Response` に格納されます。

/// note | 備考

メディアタイプを持たないレスポンスクラスを使用すると、FastAPIはレスポンスにコンテンツがないものと見なします。そのため、生成されるOpenAPIドキュメントにレスポンスフォーマットは記載されません。

## Combine predefined responses and custom ones { #combine-predefined-responses-and-custom-ones }

You might want to have some predefined responses that apply to many *path operations*, but you want to combine them with custom responses needed by each *path operation*.

For those cases, you can use the Python technique of "unpacking" a `dict` with `**dict_to_unpack`:

```Python
old_dict = {
    "old key": "old value",

## Combina responses predefinidos y personalizados { #combine-predefined-responses-and-custom-ones }

Es posible que desees tener algunos responses predefinidos que se apliquen a muchas *path operations*, pero que quieras combinarlos con responses personalizados necesarios por cada *path operation*.

Para esos casos, puedes usar la técnica de Python de "desempaquetar" un `dict` con `**dict_to_unpack`:

```Python
old_dict = {
    "old key": "old value",

    override fun getSubprojectByName(name: String) = nameToSubproject[name]

    private fun toSubproject(subproject: Map<String, Any>): GradleSubproject {
        val name = subproject["name"] as String
        val path = subproject["path"] as String
        val unitTests = !ignoredSubprojects.contains(name) && subproject["unitTests"] as Boolean
        val functionalTests = !ignoredSubprojects.contains(name) && subproject["functionalTests"] as Boolean

    have prod supersource, even if they have none. GWT is happy to ignore us
    when we specify a nonexistent path.

    (I hope that this workaround does not cause its own problems in the future.)
-->
<super-source path="super"/>

<inherits name="com.google.common.annotations.Annotations" />
<inherits name="com.google.common.base.Base" />

    have prod supersource, even if they have none. GWT is happy to ignore us
    when we specify a nonexistent path.

    (I hope that this workaround does not cause its own problems in the future.)
-->
<super-source path="super"/>

<inherits name="com.google.common.annotations.Annotations" />
<inherits name="com.google.common.base.Base" />
<inherits name="com.google.common.math.Math" />

package disk

import (
	"errors"
	"fmt"
	"syscall"
)

// GetInfo returns total and free bytes available in a directory, e.g. `/`.
func GetInfo(path string, _ bool) (info Info, err error) {
	s := syscall.Statfs_t{}
	err = syscall.Statfs(path, &s)
	if err != nil {
		return Info{}, err
	}
	reservedBlocks := s.Bfree - uint64(s.Bavail)
	info = Info{
		Total:  uint64(s.Bsize) * (s.Blocks - reservedBlocks),

    Trans2GetDfsReferral(final String filename) {
        this(filename, 3);
    }

    Trans2GetDfsReferral(final String filename, final int maxReferralLevel) {
        this.maxReferralLevel = maxReferralLevel;
        path = filename;
        command = SMB_COM_TRANSACTION2;
        subCommand = TRANS2_GET_DFS_REFERRAL;
        totalDataCount = 0;
        maxParameterCount = 0;
        maxDataCount = 4096;
        maxSetupCount = (byte) 0x00;

     */
    void destroy();

    /**
     * Creates a thumbnail generation task.
     * @param path The path to the source document.
     * @param docMap The document map containing metadata.
     * @return A tuple containing task information.
     */
    Tuple3<String, String, String> createTask(String path, Map<String, Object> docMap);

class Trans2QueryPathInformation extends SmbComTransaction {

    private final int informationLevel;

    Trans2QueryPathInformation(final String filename, final int informationLevel) {
        path = filename;
        this.informationLevel = informationLevel;
        command = SMB_COM_TRANSACTION2;
        subCommand = TRANS2_QUERY_PATH_INFORMATION;
        totalDataCount = 0;
        maxParameterCount = 2;