So, they will be included in the JSON response.

/// tip

Notice that the default values can be anything, not only `None`.

They can be a list (`[]`), a `float` of `10.5`, etc.

///

### `response_model_include` and `response_model_exclude` { #response-model-include-and-response-model-exclude }

And a response with a status code `200` that uses your `response_model`, but includes a custom `example`:

{* ../../docs_src/additional_responses/tutorial003.py hl[20:31] *}

It will all be combined and included in your OpenAPI, and shown in the API docs:

<img src="/img/tutorial/additional-responses/image01.png">

        // Cannot directly access protected fields, just verify the result is not null
    }

    // Test multiple configurations
    public void test_multipleConfigurations() {
        // Test with exception included = true
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {
            private static final long serialVersionUID = 1L;

            @Override

	// dataUsageBucketLen must be length of ObjectsHistogramIntervals
	dataUsageBucketLen  = 11
	dataUsageVersionLen = 7
)

// ObjectsHistogramIntervalsV1 is the list of all intervals
// of object sizes to be included in objects histogram(V1).
var ObjectsHistogramIntervalsV1 = [dataUsageBucketLenV1]objectHistogramInterval{
	{"LESS_THAN_1024_B", 0, humanize.KiByte - 1},
	{"BETWEEN_1024B_AND_1_MB", humanize.KiByte, humanize.MiByte - 1},

And then the new OpenAPI 3.1.0 was based on the latest version (JSON Schema 2020-12) that included this new field `examples`.

And now this new `examples` field takes precedence over the old single (and custom) `example` field, that is now deprecated.

This is an advanced usage that you might not really need, but it's there in case you do.

## Include an `APIRouter` in another { #include-an-apirouter-in-another }

The same way you can include an `APIRouter` in a `FastAPI` application, you can include an `APIRouter` in another `APIRouter` using:

```Python
router.include_router(other_router)
```

## OpenAPI Extra { #openapi-extra }

When you declare a *path operation* in your application, **FastAPI** automatically generates the relevant metadata about that *path operation* to be included in the OpenAPI schema.

/// note | Technical details

 * prefix for SMB1 URLs based on the configured server and port.
 * </p>
 *
 * <p>
 * The path prefix is in the format "smb1://server:port/", where the port is
 * included only if it's greater than 0. If the server is not set, the path
 * prefix will be "smb1://".
 * </p>
 */
public class SmbAuthentication {
    private String server;

    private int port;

///

## OpenAPI and API docs { #openapi-and-api-docs }

If you return additional status codes and responses directly, they won't be included in the OpenAPI schema (the API docs), because FastAPI doesn't have a way to know beforehand what you are going to return.

## Older `GraphQLApp` from Starlette { #older-graphqlapp-from-starlette }

Previous versions of Starlette included a `GraphQLApp` class to integrate with <a href="https://graphene-python.org/" class="external-link" target="_blank">Graphene</a>.