# Custom Docs UI Static Assets (Self-Hosting)

The API docs use **Swagger UI** and **ReDoc**, and each of those need some JavaScript and CSS files.

By default, those files are served from a <abbr title="Content Delivery Network: A service, normally composed of several servers, that provides static files, like JavaScript and CSS. It's commonly used to serve those files from the server closer to the client, improving performance.">CDN</abbr>.

    If you are starting with **FastAPI**, you might not need this.

You can declare additional responses, with additional status codes, media types, descriptions, etc.

Those additional responses will be included in the OpenAPI schema, so they will also appear in the API docs.

But for those additional responses you have to make sure you return a `Response` like `JSONResponse` directly, with your status code and content.

## Additional Response with `model`

  // +optional
  optional PodsMetricSource pods = 3;

  // resource refers to a resource metric (such as those specified in
  // requests and limits) known to Kubernetes describing each pod in the
  // current scale target (e.g. CPU or memory). Such metrics are built in to
  // Kubernetes, and have special scaling options on top of those available
  // to normal per-pod metrics using the "pods" source.
  // +optional

work) run the object code and to modify the work, including scripts to
control those activities.  However, it does not include the work's
System Libraries, or general-purpose tools or generally available free
programs which are used unmodified in performing those activities but
which are not part of the work.  For example, Corresponding Source

    @Override
    public List<String> getActiveProfileIds() {
        return activeProfileIds;
    }

    /**
     * Sets the identifiers of those profiles that should be activated by explicit demand.
     *
     * @param activeProfileIds The identifiers of those profiles to activate, may be {@code null}.
     * @return This context, never {@code null}.
     */

  // +optional
  optional PodsMetricSource pods = 3;

  // resource refers to a resource metric (such as those specified in
  // requests and limits) known to Kubernetes describing each pod in the
  // current scale target (e.g. CPU or memory). Such metrics are built in to
  // Kubernetes, and have special scaling options on top of those available
  // to normal per-pod metrics using the "pods" source.
  // +optional

But in most cases, you will want to perform these steps only **once**.

So, you will want to have a **single process** to perform those **previous steps**, before starting the application.

  // +optional
  optional PodsMetricSource pods = 3;

  // resource refers to a resource metric (such as those specified in
  // requests and limits) known to Kubernetes describing each pod in the
  // current scale target (e.g. CPU or memory). Such metrics are built in to
  // Kubernetes, and have special scaling options on top of those available
  // to normal per-pod metrics using the "pods" source.
  // +optional

        """

        when:
        run('checkDeadInternalLinks').buildAndFail()

        then:

 * Updating the table can change the contents of those collections, and updating the collections
 * will change the table.
 *
 * <p>All methods that modify the table are optional, and the views returned by the table may or may
 * not be modifiable. When modification isn't supported, those methods will throw an {@link
 * UnsupportedOperationException}.
 *
 * <h3>Implementations</h3>
 *