* fixes upgrade test to work with tightened validation of initializer names in 1.8 ([#52592](https://github.com/kubernetes/kubernetes/pull/52592), [@liggitt](https://github.com/liggitt))
* Fix inconsistent Prometheus cAdvisor metrics ([#51473](https://github.com/kubernetes/kubernetes/pull/51473), [@bboreham](https://github.com/bboreham))

   * suppress it with {@code FeatureSpecificTestSuiteBuilder.suppressing()} until <a
   * href="https://bugs.openjdk.org/browse/JDK-5045147">JDK-5045147</a> is fixed.
   */
  @J2ktIncompatible
  @GwtIncompatible // reflection
  public static Method getAddAllNullUnsupportedMethod() {
    return getMethod(CollectionAddAllTester.class, "testAddAll_nullUnsupported");
  }

                }
            }
        }

        /*
         * MNG-4312: We neither have reserved all of the above magic expressions nor is their set fixed/well-known (it
         * gets occasionally extended by newer Maven versions). This imposes the risk for existing plugins to
         * unintentionally use such a magic expression for an ordinary property. So here we check whether we

   * {@link java.util.TreeMap} can suppress it with {@code
   * FeatureSpecificTestSuiteBuilder.suppressing()} until <a
   * href="https://bugs.openjdk.org/browse/JDK-5045147">JDK-5045147</a> is fixed.
   */
  @J2ktIncompatible
  @GwtIncompatible // reflection
  public static Method getPutNullKeyUnsupportedMethod() {
    return getMethod(MapPutTester.class, "testPut_nullKeyUnsupported");
  }

        this.loadLines()
        if (!options.noInit) this.init()
    }

    loadLines() {
        // Load all the lines and create the container so that the size is fixed
        // Otherwise it would be changing and the user viewport would be constantly
        // moving as she/he scrolls
        const finish = this.generateFinish()
        finish.style.visibility = 'hidden'

   * {@link java.util.TreeMap} can suppress it with {@code
   * FeatureSpecificTestSuiteBuilder.suppressing()} until <a
   * href="https://bugs.openjdk.org/browse/JDK-5045147">JDK-5045147</a> is fixed.
   */
  @J2ktIncompatible
  @GwtIncompatible // reflection
  public static Method getPutNullKeyUnsupportedMethod() {
    return getMethod(MapPutTester.class, "testPut_nullKeyUnsupported");
  }

        // Thread.interrupt can throw arbitrary exceptions due to the nio InterruptibleChannel API
        // This will make sure that tasks don't get stuck busy waiting.
        // Some of this is fixed in jdk11 (see https://bugs.openjdk.org/browse/JDK-8198692) but
        // not all.  See the test cases for examples on how this can happen.
        try {
          ((Thread) currentRunner).interrupt();
        } finally {

    /**
     * Returns any temporary directories used to extract resources from jars.
     *
     * These directories will be created as siblings of the randomly assigned test root directories, with the fixed name {@code tmp-extracted-resources}.
     */
    private
    fun TestFilesCleanupProjectState.tmpExtractedResourcesDirs() = projectBuildDir.get().asFile.resolve("tmp/teŝt files")
        .listFiles()

    checkState(!isRunning, "This stopwatch is already running.");
    isRunning = true;
    startTick = ticker.read();
    return this;
  }

  /**
   * Stops the stopwatch. Future reads will return the fixed duration that had elapsed up to this
   * point.
   *
   * @return this {@code Stopwatch} instance
   * @throws IllegalStateException if the stopwatch is already stopped.
   */
  @CanIgnoreReturnValue

## Setting up your development environment

In order to make changes to Gradle, you'll need:

* [Adoptium JDK](https://adoptium.net/temurin/archive/?version=17) (Java Development Kit) **version 17**. Fixed version is required to use [remote cache](#remote-build-cache).
* A text editor or IDE. We use and recommend [IntelliJ IDEA CE](http://www.jetbrains.com/idea/). IntelliJ Ultimate will also work. You'll need IntelliJ 2021.2.2 or newer.