@Override
        public String getRealPath(String path) {
            if (path == null) {
                return tempDir.getAbsolutePath();
            }
            // Remove leading slash if present
            if (path.startsWith("/")) {
                path = path.substring(1);
            }
            return new File(tempDir, path.replace("/", File.separator)).getAbsolutePath();
        }

まず、1 つ以上のコールバックを含む新しい `APIRouter` を作成します。

{* ../../docs_src/openapi_callbacks/tutorial001_py310.py hl[1,23] *}

### コールバックの path operation を作成 { #create-the-callback-path-operation }

上で作成したのと同じ `APIRouter` を使って、コールバックの *path operation* を作成します。

見た目は通常の FastAPI の *path operation* と同じです:

* 受け取るボディの宣言（例: `body: InvoiceEvent`）が必要でしょう。
* 返すレスポンスの宣言（例: `response_model=InvoiceEventReceived`）も持てます。

    <!--<ruleset-ref path='rulesets/basic.xml'>-->
        <!--<exclude name='ExplicitHashSetInstantiation'/>-->
        <!--<exclude name='ExplicitCallToAndMethod'/>-->
        <!--<exclude name='ExplicitCallToOrMethod'/>-->
    <!--</ruleset-ref>-->
    <ruleset-ref path='rulesets/braces.xml'/>
    <ruleset-ref path='rulesets/imports.xml'>
        <exclude name="ImportFromSunPackages"/>

* host (in a podcast): host
* request (as in HTTP request): request
* response (as in HTTP response): response
* path operation function: path operation function (do not translate to "función de operación de ruta")
* path operation: path operation (do not translate to "operación de ruta")
* path (as in URL path): path (do not translate to "ruta")
* query (as in URL query): query (do not translate to "consulta")
* cookie (as in HTTP cookie): cookie

        "keywords_path": "${fess.dictionary.path}da/protwords.txt"
      },
      "danish_stemmer": {
        "type":       "stemmer",
        "language":   "danish"
      },
      "dutch_stop": {
        "type":       "stop",
        "stopwords":  "_dutch_"
      },
      "dutch_keywords": {
        "type":       "keyword_marker",
        "keywords_path": "${fess.dictionary.path}nl/protwords.txt"
      },

    assert response.status_code == 200, response.text
    assert response.json() == snapshot(
        {
            "openapi": "3.1.0",
            "info": {"title": "FastAPI", "version": "0.1.0"},
            "paths": {
                "/": {
                    "get": {
                        "summary": "F",
                        "operationId": "f__get",
                        "responses": {
                            "200": {

    }:
        return True
    current_status_code = int(status_code)
    return not (current_status_code < 200 or current_status_code in {204, 205, 304})


def get_path_param_names(path: str) -> set[str]:
    return set(re.findall("{(.*?)}", path))


_invalid_args_message = (
    "Invalid args for response field! Hint: "
    "check that {type_} is a valid Pydantic field type. "

        /**
         * Create a new change notification handle
         *
         * @param path directory path
         * @param key lease key
         * @param dir directory file
         */
        public ChangeNotificationHandle(String path, Smb2LeaseKey key, SmbFile dir) {
            this.directoryPath = path;
            this.leaseKey = key;
            this.directoryFile = dir;
            this.active = true;

        int i = 0, b = 0;
        final int len = path.length();

        do {
            if (ri == rlast) {
                result[rlast] = path.substring(b);
                return;
            }
            if (i == len || path.charAt(i) == '\\') {
                result[ri] = path.substring(b, i);
                ri++;
                b = i + 1;
            }
        } while (i++ < len);

    <!--<ruleset-ref path='rulesets/basic.xml'>-->
        <!--<exclude name='ExplicitHashSetInstantiation'/>-->
        <!--<exclude name='ExplicitCallToAndMethod'/>-->
        <!--<exclude name='ExplicitCallToOrMethod'/>-->
    <!--</ruleset-ref>-->
    <ruleset-ref path='rulesets/braces.xml'/>
    <ruleset-ref path='rulesets/imports.xml'>
        <exclude name="ImportFromSunPackages"/>