@Override
    public HttpResponse handle(HttpRequest request) {
        return new HttpErrorResponse(404, "Document API is not configured in this cluster. See https://docs.vespa.ai/en/reference/services-container.html#document-api");
    }
HTTP handler for a mock /document/v1 API, used when &lt;document-api&gt; is not specified
in services.xml. Returns http status code 404 and a message describing that API is not configured,
pointing to documentation for how to do that.

@author hmusum
vespaclient-container-plugin/src/main/java/com/yahoo/document/restapi/resource/DummyDocumentV1ApiHandler.java