You will see the automatic API docs for the sub-application, including only its own _path operations_, all under the correct sub-path prefix `/subapi`:

<img src="/img/tutorial/sub-applications/image02.png">

If you try interacting with any of the two user interfaces, they will work correctly, because the browser will be able to talk to each specific app or sub-app.

### Technical Details: `root_path`

    }

/**
 * Referenced callable symbol, even if it not completely correctly resolved.
 */
private val FirQualifiedAccessExpression.referencedCallableSymbol: FirCallableSymbol<*>?
    get() {
        return toResolvedCallableSymbol()
    }

/**
 * Referenced [ClassId], even if it is not completely correctly resolved.
 */
private val FirResolvedTypeRef.resolvedClassId: ClassId?
    get() {

prepared before that call will be sent or received after the call.
Earlier versions of Go used channels with a one-element buffer,
making it difficult to use `Reset` and `Stop` correctly.
A visible effect of this change is that `len` and `cap` of timer channels
now returns 0 instead of 1, which may affect programs that
poll the length to decide whether a receive on the timer channel
will succeed.

            description = "The test task you want to run"
        )
        text(
            testNameParameterName,
            """org.gradle.api.tasks.CachedTaskExecutionIntegrationTest.outputs*are*correctly*loaded*from*cache""",
            display = ParameterDisplay.PROMPT,
            allowEmpty = false,

     * @return A map of lifecycles, indexed on id
     */
    public Map<String, Lifecycle> getPhaseToLifecycleMap() {
        // If people are going to make their own lifecycles then we need to tell people how to namespace them correctly
        // so that they don't interfere with internally defined lifecycles.

        Map<String, Lifecycle> phaseToLifecycleMap = new HashMap<>();

        for (Lifecycle lifecycle : getLifeCycles()) {

public class DefaultProfileInjector implements ProfileInjector {

    private static final Map<Model, Map<List<Profile>, Model>> CACHE = Collections.synchronizedMap(new WeakHashMap<>());

    // In order for the weak hash map to work correctly, we must not hold any reference to
    // the model used as the key.  So we use a dummy model as a placeholder to indicate that
    // we want to store the model used as they key.

And open the docs at <a href="http://127.0.0.1:8000/docs" class="external-link" target="_blank">http://127.0.0.1:8000/docs</a>.

You will see the automatic API docs, including the paths from all the submodules, using the correct paths (and prefixes) and the correct tags:

<img src="/img/tutorial/bigger-applications/image01.png">

## Include the same router multiple times with different `prefix`

    This is something that you have to do yourself in your code, and make sure you use those JSON keys.

    It's almost the only thing that you have to remember to do correctly yourself, to be compliant with the specifications.

    For the rest, **FastAPI** handles it for you.

## Update the dependencies

Now we are going to update our dependencies.

				entries[i] = ""
				continue
			}
			if hasSuffixByte(entry, SlashSeparatorChar) {
				if strings.HasSuffix(entry, globalDirSuffixWithSlash) {
					// Add without extension so it is sorted correctly.
					entry = strings.TrimSuffix(entry, globalDirSuffixWithSlash) + slashSeparator
					dirObjects[entry] = struct{}{}
					entries[i] = entry
					continue
				}

func getSignature(signingKey []byte, stringToSign string) string {
	return hex.EncodeToString(sumHMAC(signingKey, []byte(stringToSign)))
}

// Check to see if Policy is signed correctly.
func doesPolicySignatureMatch(formValues http.Header) (auth.Credentials, APIErrorCode) {
	// For SignV2 - Signature field will be valid
	if _, ok := formValues[xhttp.AmzSignatureV2]; ok {