@Test
  public void undirectedGraph() {
    testGraphMutation(GraphBuilder.undirected());
  }

  private static void testGraphMutation(GraphBuilder<? super Integer> graphBuilder) {
    Random gen = new Random(42); // Fixed seed so test results are deterministic.

    for (int trial = 0; trial < NUM_TRIALS; ++trial) {
      MutableGraph<Integer> graph = graphBuilder.allowsSelfLoops(true).build();

      assertThat(graph.nodes()).isEmpty();

   * tests of {@link CopyOnWriteArraySet} can suppress it with {@code
   * FeatureSpecificTestSuiteBuilder.suppressing()} until <a
   * href="https://bugs.openjdk.org/browse/JDK-6570575">JDK-6570575</a> is fixed.
   */
  @J2ktIncompatible
  @GwtIncompatible // reflection
  public static Method getListIteratorFullyModifiableMethod() {
    return getMethod(ListListIteratorTester.class, "testListIterator_fullyModifiable");
  }

   * with {@code FeatureSpecificTestSuiteBuilder.suppressing()} until <a
   * href="https://bugs.openjdk.org/browse/JDK-6409434">JDK-6409434</a> is fixed. It's unclear
   * whether nulls were to be permitted or forbidden, but presumably the eventual fix will be to
   * permit them, as it seems more likely that code would depend on that behavior than on the other.

Several of these are explored in the next chapters of the tutorial.

## Order matters { #order-matters }

When creating *path operations*, you can find situations where you have a fixed path.

Like `/users/me`, let's say that it's to get data about the current user.

And then you can also have a path `/users/{user_id}` to get data about a specific user by some user ID.

* Fixed validation of multizone cluster for GCE ([#38695](https://github.com/kubernetes/kubernetes/pull/38695), [@jszczepkowski](https://github.com/jszczepkowski))
* Fix nil pointer dereference in test framework ([#37583](https://github.com/kubernetes/kubernetes/pull/37583), [@mtaufen](https://github.com/mtaufen))

        modifyDependencies(dependenciesToModify)
        addDependencies(dependencyFixes)
        removeDependencies(dependenciesToRemove)

        println("Project health issues fixed. Run `gradle build` to verify.")
    }

    private fun parseErrorLog(
        dependencyFixes: MutableMap<String, MutableList<String>>,
        dependenciesToRemove: MutableMap<String, MutableList<String>>,

        MockOptions options = new MockOptions(false); // not quiet
        MockSlf4jConfiguration slf4jConfiguration = new MockSlf4jConfiguration();

        // Simulate the fixed logic from LookupInvoker.prepareLogging()
        Slf4jConfiguration.Level loggerLevel;
        if (invokerRequest.effectiveVerbose()) {
            loggerLevel = Slf4jConfiguration.Level.DEBUG;

        });

        tasks.register("updateFixedIssuesInReleaseNotes", UpdateFixedIssuesInReleaseNotes.class, task -> {
            task.setGroup("release notes");
            task.setDescription("Update the list of fixed issues in the release notes for a patch release.");
            task.getGithubToken().set(project.getProviders().environmentVariable("GITHUB_TOKEN"));

        // reroute to cookbook, no anchors needed
        "build_jenkins",
        "build_teamcity",
        "build_github_actions",
        "sec:configure_github_actions",
        "build_travis",
        // fixed with redirection (javascript in deleted pages)
        "sec:component_selection_rules",
        "sub:declaring_dependency_with_dynamic_version",
        "sub:declaring_dependency_with_changing_version",

- Fixed architecture within manifest for non `amd64` etcd images. ([#104116](https://github.com/kubernetes/kubernetes/pull/104116), [@saschagrunert](https://github.com/saschagrunert))
- Fixed architecture within manifest for non `amd64` etcd images. ([#105484](https://github.com/kubernetes/kubernetes/pull/105484), [@saschagrunert](https://github.com/saschagrunert))