<groupId>org.codehaus.plexus</groupId>
      <artifactId>plexus-xml</artifactId>
      <version>${plexusXmlVersion}</version>
      <scope>provided</scope>
      <exclusions>
        <!-- we need the exclusion to be able to release, else we have a cycle -->
        <exclusion>
          <groupId>org.apache.maven</groupId>
          <artifactId>maven-xml-impl</artifactId>
        </exclusion>
      </exclusions>
    </dependency>

    /**
     * Visits the structure of this collection, that is, zero or more atomic sources of files.
     *
     * <p>The implementation should call the most specific methods on {@link FileCollectionStructureVisitor} that it is able to.</p>
     */
    void visitStructure(FileCollectionStructureVisitor visitor);

    /**
     * Returns the display name of this file collection. Used in log and error messages.
     *
     * @return the display name

 * <pre>
 *      &#64;ToolingModelContract(subTypes = [Dog.class, Cat.class])
 *      interface Animal {}
 * </pre>
 * <p>
 * On the client-side we will be able to write code such as:
 * <pre>
 *      if (model instanceof Dog) {
 *          ((Dog) model).bark();
 *      } else if (model instanceof Cat) {
 *          ((Cat) model).meow();

	t.idleMu.Lock()
	defer t.idleMu.Unlock()
	return t.closeIdle
}

func (t *Transport) QueueForIdleConnForTesting() {
	t.queueForIdleConn(nil)
}

// PutIdleTestConn reports whether it was able to insert a fresh
// persistConn for scheme, addr into the idle connection pool.
func (t *Transport) PutIdleTestConn(scheme, addr string) bool {
	c, _ := net.Pipe()
	key := connectMethodKey{"", scheme, addr, false}

	}

	// TestFS is expected to return a list of errors.
	// Enforce that the list can be extracted for browsing.
	var errs interface{ Unwrap() []error }
	if !errors.As(err, &errs) {
		t.Errorf("caller should be able to extract the errors as a list: %#v", err)
	} else {
		for _, err := range errs.Unwrap() {
			// ErrPermission is expected
			// but any other error must be reported.
			if !errors.Is(err, fs.ErrPermission) {

    extendsFrom(distribution.get())
    configureAsRuntimeJarClasspath(objects)
}

// Defines configurations used to resolve external dependencies
// that the public API depends on.
// TODO: We should be able to derive these dependencies automatically.
//       In fact, our public API should have no external dependencies.
val externalApi = configurations.dependencyScope("externalApi") {

This can make it a lot easier for your users to **implement their APIs** to receive your **webhook** requests, they might even be able to autogenerate some of their own API code.

!!! info
    Webhooks are available in OpenAPI 3.1.0 and above, supported by FastAPI `0.99.0` and above.

## An app with webhooks

<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`

 * not necessarily the case for declaration providers (e.g. the IDE declaration provider hitting the index without caching).
 *
 * However, since symbol names providers may not be able to compute name sets per their contract, we may have to fall back to the
 * [declaration provider][org.jetbrains.kotlin.analysis.api.platform.declarations.KotlinDeclarationProvider].
 *

    Also, before that, in previous versions, the `request` object was passed as part of the key-value pairs in the context for Jinja2.

!!! tip
    By declaring `response_class=HTMLResponse` the docs UI will be able to know that the response will be HTML.

!!! note "Technical Details"
    You could also use `from starlette.templating import Jinja2Templates`.