/**
     * Constructor for the TOMBSTONE, avoids use of ATOMIC_HELPER in case this class is loaded
     * before the ATOMIC_HELPER. Apparently this is possible on some android platforms.
     */
    Waiter(boolean unused) {}

    Waiter() {
      // avoid volatile write, write is made visible by subsequent CAS on waitersField field
      putThread(this, Thread.currentThread());
    }

  }

  public void testReentrantHasNext() {
    Iterator<Integer> iter =
        new AbstractIterator<Integer>() {
          @Override
          protected Integer computeNext() {
            boolean unused = hasNext();
            throw new AssertionError();
          }
        };
    assertThrows(IllegalStateException.class, iter::hasNext);
  }

   * the documentation for {@link #fromValid(String)}.
   */
  public static boolean isValid(String specifier) {
    try {
      HostSpecifier unused = fromValid(specifier);
      return true;
    } catch (IllegalArgumentException e) {
      return false;
    }
  }

  @Override
  public boolean equals(@Nullable Object other) {

      super(message);
    }

    public Throwable getAntecedent() {
      return antecedent;
    }
  }

  @SuppressWarnings("unused") // we're testing that they're not used
  public static final class ExceptionWithSomePrivateConstructors extends Exception {
    private ExceptionWithSomePrivateConstructors(String a) {}

  }

  public void testCombineOrdered_differentBitLengths() {
    assertThrows(
        IllegalArgumentException.class,
        () -> {
          HashCode unused =
              Hashing.combineOrdered(
                  ImmutableList.of(HashCode.fromInt(32), HashCode.fromLong(32L)));
        });
  }

  public void testCombineOrdered() {

    assertThat(expected).hasMessageThat().isEqualTo(msg);
  }

  public void testBadArguments_plusforspace() {
    // space can be a safe char if plusForSpace is false
    PercentEscaper unused = new PercentEscaper(" ", false);

    // space cannot be a safe char is plusForSpace is true
    String msg = "plusForSpace cannot be specified when space is a 'safe' character";
    IllegalArgumentException expected =

  public void testSize_populated() {
    for (LoadingCache<Object, Object> cache : caches()) {
      // don't let the entries get GCed
      List<Entry<Object, Object>> unused = warmUp(cache);
      assertEquals(WARMUP_SIZE, cache.size());
      assertMapSize(cache.asMap(), WARMUP_SIZE);
      checkValidState(cache);
    }
  }

  public void testContainsKey_found() {

  }

  @CanIgnoreReturnValue
  private <T> T checkValid(T t) {
    // a ClassCastException is what's supposed to happen!
    @SuppressWarnings("unchecked")
    K k = (K) t;
    int unused = comparator().compare(k, k);
    return t;
  }

  @Override
  public boolean equals(@Nullable Object obj) {
    return delegate.equals(obj);
  }

  @Override
  public int hashCode() {

  }

  @CanIgnoreReturnValue
  private <T> T checkValid(T t) {
    // a ClassCastException is what's supposed to happen!
    @SuppressWarnings("unchecked")
    E e = (E) t;
    int unused = comparator().compare(e, e);
    return t;
  }

  @Override
  public boolean equals(@Nullable Object obj) {
    return delegate.equals(obj);
  }

  @Override
  public int hashCode() {

    checkFromStringCase("[2001::1]", -1, "2001::1", -1, false);
    checkFromStringCase("2001::3", 65536, "2001::3", -1, false);
  }

  public void testFromStringUnusedDefaultPort() {
    // Default port, but unused.
    checkFromStringCase("gmail.com:81", 77, "gmail.com", 81, true);
    checkFromStringCase("192.0.2.2:83", 77, "192.0.2.2", 83, true);
    checkFromStringCase("[2001::2]:85", 77, "2001::2", 85, true);
  }