If you want to override the response from inside of the function but at the same time document the "media type" in OpenAPI, you can use the `response_class` parameter AND return a `Response` object.

The `response_class` will then be used only to document the OpenAPI *path operation*, but your `Response` will be used as is.

#### Return an `HTMLResponse` directly

For example, it could be something like:

```Python hl_lines="7  21  23"

      },
      logger = logger,
    )

  /** Runs all tasks that are ready. Used by the test thread only. */
  fun runTasks() {
    advanceUntil(nanoTime)
  }

  /** Advance the simulated clock, then runs tasks that are ready. Used by the test thread only. */
  fun advanceUntil(newTime: Long) {
    taskRunner.assertThreadDoesntHoldLock()

    fun noTransform() = commonNoTransform()

    fun immutable() = commonImmutable()

    /**
     * Sets the maximum age of a cached response. If the cache response's age exceeds [maxAge], it
     * will not be used and a network request will be made.
     *
     * @param maxAge a non-negative duration. This is stored and transmitted with [TimeUnit.SECONDS]
     *     precision; finer precision will be lost.
     */

 *  New: `Request.Builder.cacheUrlOverride()` customizes the cache key used for a request. This can
    be used to make canonical URLs for the cache that omit insignificant query parameters or other
    irrelevant data.

    This feature may be used with `POST` requests to cache their responses. In such cases the
    request body is not used to determine the cache key, so you must manually add cache-relevant

  repeated string allowedCapabilities = 4;

  // volumes is an allowlist of volume plugins. Empty indicates that
  // no volumes may be used. To allow all volumes you may use '*'.
  // +optional
  repeated string volumes = 5;

  // hostNetwork determines if the policy allows the use of HostNetwork in the pod spec.
  // +optional
  optional bool hostNetwork = 6;

Used by Starlette:

* <a href="https://www.python-httpx.org" target="_blank"><code>httpx</code></a> - Required if you want to use the `TestClient`.
* <a href="https://jinja.palletsprojects.com" target="_blank"><code>jinja2</code></a> - Required if you want to use the default template configuration.

  // Items is the list of stateful sets.
  repeated StatefulSet items = 2;
}

// StatefulSetOrdinals describes the policy used for replica ordinal assignment
// in this StatefulSet.
message StatefulSetOrdinals {
  // start is the number representing the first replica's index. It may be used
  // to number replicas from an alternate index (eg: 1-indexed) over the default

0.99.0 (0.99.0 and above use the newer OpenAPI 3.1.0) when you used `example` or `examples` with any of the other utilities (`Query()`, `Body()`, etc.) those examples were not added to the JSON Schema that describes that data (not even to OpenAPI's own version of JSON Schema), they were added directly to the *path operation* declaration in OpenAPI (outside the parts of OpenAPI that use JSON Schema).

But now that FastAPI 0.99.0 and above uses OpenAPI 3.1.0, that uses JSON Schema 2020-12, and...

  // Populated by the API server on creation and immutable.
  // +optional
  map<string, ExtraValue> extra = 6;
}

// CertificateSigningRequestStatus contains conditions used to indicate
// approved/denied/failed status of the request, and the issued certificate.
message CertificateSigningRequestStatus {

  // If the SNI host in a listener conflicts with the "Host" header field used
  // by an IngressRule, the SNI host is used for termination and value of the
  // Host header is used for routing.
  // +optional
  optional string secretName = 2;
}

// DEPRECATED 1.9 - This group version of NetworkPolicy is deprecated by networking/v1/NetworkPolicy.
// NetworkPolicy describes what network traffic is allowed for a set of Pods