*       CheckedRunnable} and {@link CheckedCallable}).
 *   <li>If you override {@link #tearDown}, make sure to invoke {@code super.tearDown} within it.
 *       This method is used to clear and check for thread assertion failures.
 *   <li>All threads generated must be joined inside each test case method (or {@code fail} to do
 *       so) before returning from the method. The {@code joinPool} method can be used to do this

    Stopwatch timer = Stopwatch.createStarted();
    Queues.drainUninterruptibly(q, new ArrayList<>(), 1, 10, MILLISECONDS);
    assertThat(timer.elapsed(MILLISECONDS)).isAtLeast(10L);
    // wait for interrupted status and clear it
    while (!Thread.interrupted()) {
      Thread.yield();
    }
  }

  private static class Producer implements Callable<@Nullable Void> {
    final BlockingQueue<Object> q;
    final int elements;

    }

    @Override
    public void close() {
        if (closed) {
            return;
        }

        try {
            secureWipePassword();

            // Clear other sensitive data
            domain = null;
            username = null;
            sessionId = null;

   *
   * <p>This method is not atomic: the map may not be empty after returning if there were concurrent
   * writes.
   */
  public void clear() {
    map.clear();
  }

  @Override
  public String toString() {
    return map.toString();
  }

  /*
   * ConcurrentMap operations which we may eventually add.
   *

        }
      };
    }

    @Override
    public Iterator<E> iterator() {
      return Multisets.iteratorImpl(this);
    }

    @Override
    public void clear() {
      countMap.clear();
    }

    private class EntrySet extends AbstractMultiset<E>.EntrySet {
      @Override
      Multiset<E> multiset() {
        return OldConcurrentHashMultiset.this;
      }

internal fun FileSystem.deleteIfExists(path: Path) {
  try {
    delete(path)
  } catch (fnfe: FileNotFoundException) {
    return
  }
}

/** Tolerant delete, try to clear as many files as possible even after a failure. */
internal fun FileSystem.deleteContents(directory: Path) {
  var exception: IOException? = null
  val files =
    try {
      list(directory)

  public void testSkip_structurallyModifiedSkipSomeList() throws Exception {
    List<String> list = Lists.newArrayList("a", "b", "c");
    FluentIterable<String> tail = FluentIterable.from(list).skip(1);
    list.subList(1, 3).clear();
    list.addAll(0, Lists.newArrayList("X", "Y", "Z"));
    assertThat(tail).containsExactly("Y", "Z", "a").inOrder();
  }

  public void testSkip_structurallyModifiedSkipAll() throws Exception {

        List<SmbTransportImpl> toClose = new ArrayList<>(this.connections);
        toClose.addAll(this.nonPooledConnections);

        // Clear the collections (thread-safe operations)
        this.connections.clear();
        this.nonPooledConnections.clear();
        this.activeConnections.set(0);

        // Close all connections outside of synchronization
        for (final SmbTransportImpl conn : toClose) {

          // Keep looping till we find a non-duplicate value.
          if (!duplicate) {
            lastValue = next;
            return lastValue;
          }
        }

        lastValue = null; // clear reference to unused data
        return endOfData();
      }
    };
  }

  @GwtIncompatible @J2ktIncompatible private static final long serialVersionUID = 0;

pkg slices, func Sorted[$0 cmp.Ordered](iter.Seq[$0]) []$0 #61899
pkg slices, func Values[$0 interface{ ~[]$1 }, $1 interface{}]($0) iter.Seq[$1] #61899
pkg structs, type HostLayout struct #66408
pkg sync, method (*Map) Clear() #61696
pkg sync/atomic, func AndInt32(*int32, int32) int32 #61395
pkg sync/atomic, func AndInt64(*int64, int64) int64 #61395
pkg sync/atomic, func AndUint32(*uint32, uint32) uint32 #61395