invalidate(key);
    }
  }

  @Override
  public void invalidateAll() {
    throw new UnsupportedOperationException();
  }

  @Override
  public CacheStats stats() {
    throw new UnsupportedOperationException();
  }

  @Override
  public ConcurrentMap<K, V> asMap() {
    throw new UnsupportedOperationException();
  }

  /**

          sumOfSquaresOfDeltas = t;
        }
        return new MeanAndVariance(mean, sumOfSquaresOfDeltas / values.length);
      }
    },
    KNUTH {
      @Override
      MeanAndVariance variance(double[] values, MeanAlgorithm meanAlgorithm) {
        if (meanAlgorithm != MeanAlgorithm.KNUTH) {
          throw new SkipThisScenarioException();
        }
        double mean = values[0];

  @J2ktIncompatible
  @GwtIncompatible // suite
  @AndroidIncompatible // test-suite builders
  public static Test suite() {
    TestSuite suite = new TestSuite();

    suite.addTest(
        SetTestSuiteBuilder.using(new ImmutableSetCopyOfGenerator())
            .named(ImmutableSetTest.class.getName())
            .withFeatures(
                CollectionSize.ANY,

 *
 * {@snippet :
 * final WeakHashMap<Object, Object> map = new WeakHashMap<>();
 * map.put(new Object(), Boolean.TRUE);
 * GcFinalization.awaitDone(new FinalizationPredicate() {
 *   public boolean isDone() {
 *     return map.isEmpty();
 *   }
 * });
 * }
 *
 * <p>Even if your non-test code does not use finalization, you can use this class to test for

    HashCode expectedHash = Hashing.md5().hashBytes(new byte[] {'m', 's'});
    HashingInputStream in = new HashingInputStream(Hashing.md5(), buffer);

    long numOfByteSkipped = in.skip(2);
    assertEquals(2, numOfByteSkipped);

    byte[] buf = new byte[4];
    int numOfByteRead = in.read(buf, 0, buf.length);
    assertEquals(2, numOfByteRead);

    assertEquals(expectedHash, in.hash());
  }

    }

    @Test
    void testValidate() {
        Artifact plugin = new DefaultArtifact(
                "org.apache.maven.its.plugins",
                "maven-it-plugin",
                "0.1",
                "compile",
                "jar",
                null,
                new DefaultArtifactHandler("ignore"));
        PluginDescriptor descriptor = new PluginDescriptor();

      int expectedOccupiedDepth) {
    AtomicBoolean actualIsOccupied = new AtomicBoolean();
    AtomicBoolean actualIsOccupiedByCurrentThread = new AtomicBoolean();
    AtomicInteger actualOccupiedDepth = new AtomicInteger();
    AtomicReference<Throwable> thrown = new AtomicReference<>();
    joinUninterruptibly(
        startThread(
            new Runnable() {
              @Override
              public void run() {

      int expectedOccupiedDepth) {
    AtomicBoolean actualIsOccupied = new AtomicBoolean();
    AtomicBoolean actualIsOccupiedByCurrentThread = new AtomicBoolean();
    AtomicInteger actualOccupiedDepth = new AtomicInteger();
    AtomicReference<Throwable> thrown = new AtomicReference<>();
    joinUninterruptibly(
        startThread(
            new Runnable() {
              @Override
              public void run() {

    assertFalse(future.set(new Foo()));
    assertFalse(future.setException(new Exception("bar")));
    assertFalse(future.setFuture(SettableFuture.create()));
    // Check that the future has been set properly.
    assertFalse(future.isDone());
    assertFalse(future.isCancelled());
    assertThrows(TimeoutException.class, () -> future.get(0, MILLISECONDS));
    FooChild value = new FooChild();
    nested.set(value);

        when(mockedPlexusContainer.lookupMap(Lifecycle.class)).thenReturn(lifeCycles);

        DefaultLifecycles dl = new DefaultLifecycles(
                new DefaultLifecycleRegistry(
                        List.of(new DefaultLifecycleRegistry.LifecycleWrapperProvider(mockedPlexusContainer))),
                new DefaultLookup(mockedPlexusContainer));

        assertEquals("clean", dl.getLifeCycles().get(0).getId());