"org.apache.maven.its.plugins",
                "maven-it-plugin",
                "0.1",
                "compile",
                "jar",
                null,
                new DefaultArtifactHandler("ignore"));
        PluginDescriptor descriptor = new PluginDescriptor();
        descriptor.setGroupId("org.apache.maven.its.plugins");
        descriptor.setArtifactId("maven-it-plugin");

 with its <<<DefaultClassRealmManager>>> implementation
 ({{{./xref/org/apache/maven/classrealm/DefaultClassRealmManager.html}source}}), using
 {{{https://codehaus-plexus.github.io/plexus-classworlds/}Plexus Classworlds}},

* Useful entry points

 * <<<Maven>>> component ({{{./apidocs/org/apache/maven/Maven.html}javadoc}}),

                            dir ('its') {
                                def ITS_BRANCH = env.CHANGE_BRANCH != null ? env.CHANGE_BRANCH :  env.BRANCH_NAME;
                                try {
                                  echo "Checkout ITs from branch: ${ITS_BRANCH}"
                                  checkout([$class: 'GitSCM',
                                          branches: [[name: ITS_BRANCH]],

Use its [builder][handshake_certificates_builder] to define which certificates the HTTPS server
returns to its clients. The returned instance can create an `SSLSocketFactory` that implements this
policy:

```java
HandshakeCertificates serverCertificates = new HandshakeCertificates.Builder()
    .heldCertificate(localhostCertificate)
    .build();
MockWebServer server = new MockWebServer();

                        def WORK_DIR=pwd()
                        def ITS_BRANCH = env.CHANGE_BRANCH != null ? env.CHANGE_BRANCH :  env.BRANCH_NAME;
                        try {
                          echo "Checkout ITs from branch: ${ITS_BRANCH}"
                          checkout([$class: 'GitSCM',
                                  branches: [[name: ITS_BRANCH]],

     *
     * @return the string representation
     */
    @Nonnull
    String asString();

    /**
     * Obtain a Stream containing this node and all its descendant.
     *
     * @return a stream containing this node and its descendant
     */
    @Nonnull
    default Stream<Node> stream() {
        return Stream.concat(Stream.of(this), getChildren().stream().flatMap(Node::stream));
    }

// 3 the component model -> interfaces for the plugin

// The plugin manager should load up a directory structure of plugins.
// - a plugin per directory where the plugin is present with its deps
// - a plugin that has its dependencies packaged up with it
// - implement filters and create a test where a plugin fails if the right classes are not filtered

### Top-level application

First, create the main, top-level, **FastAPI** application, and its *path operations*:

```Python hl_lines="3  6-8"
{!../../../docs_src/sub_applications/tutorial001.py!}
```

### Sub-application

Then, create your sub-application, and its *path operations*.

This sub-application is just another standard FastAPI application, but this is the one that will be "mounted":

 - [ ] In any other case, please file an [Apache Individual Contributor License Agreement](https://www.apache.org/licenses/icla.pdf).

   * Get the full set of requirements for a tester class.
   *
   * @param testerMethod a test method of a tester class
   * @return all the constraints implicitly or explicitly required by the method, its declaring
   *     class, or any of its superclasses.
   * @throws ConflictingRequirementsException if the requirements are mutually inconsistent.
   */
  public static TesterRequirements getTesterRequirements(Method testerMethod)