* <p>This class should not be assumed to be universally superior to {@code
 * java.util.LinkedHashSet}. Generally speaking, this class reduces object allocation and memory
 * consumption at the price of moderately increased constant factors of CPU. Only use this class
 * when there is a specific reason to prioritize memory over CPU.
 *
 * @author Louis Wasserman
 */
@GwtIncompatible // not worth using in GWT for now
@ElementTypesAreNonnullByDefault

  static final ImmutableMap<Object, Object> EMPTY =
      new RegularImmutableMap<>((Entry<Object, Object>[]) ImmutableMap.EMPTY_ENTRY_ARRAY, null, 0);

  /**
   * Closed addressing tends to perform well even with high load factors. Being conservative here
   * ensures that the table is still likely to be relatively sparse (hence it misses fast) while
   * saving space.
   */
  @VisibleForTesting static final double MAX_LOAD_FACTOR = 1.2;

  /**

   * Sec-CH-UA-Form-Factor}</a> header field name.
   *
   * @deprecated Prefer {@link SEC_CH_UA_FORM_FACTORS}.
   * @since 32.0.0
   */
  @Deprecated public static final String SEC_CH_UA_FORM_FACTOR = "Sec-CH-UA-Form-Factor";

  /**
   * The HTTP <a href="https://wicg.github.io/ua-client-hints/#sec-ch-ua-form-factors">{@code

 *
 * <p>This class should not be assumed to be universally superior to {@code java.util.HashSet}.
 * Generally speaking, this class reduces object allocation and memory consumption at the price of
 * moderately increased constant factors of CPU. Only use this class when there is a specific reason
 * to prioritize memory over CPU.
 *
 * @author Dimitris Andreou
 * @author Jon Noack
 */
@GwtIncompatible // not worth using in GWT for now

 *
 * <p>This class should not be assumed to be universally superior to {@code java.util.HashSet}.
 * Generally speaking, this class reduces object allocation and memory consumption at the price of
 * moderately increased constant factors of CPU. Only use this class when there is a specific reason
 * to prioritize memory over CPU.
 *
 * @author Dimitris Andreou
 * @author Jon Noack
 */
@GwtIncompatible // not worth using in GWT for now

 *       anything about how the property is tested. To find out, read the code.
 *   <li>These tests are "conformance tests", and do not attempt to test throughput, latency,
 *       scalability or other performance factors (see the separate "jtreg" tests for a set intended
 *       to check these for the most central aspects of functionality.) So, most tests use the
 *       smallest sensible numbers of threads, collection sizes, etc needed to check basic

 *       anything about how the property is tested. To find out, read the code.
 *   <li>These tests are "conformance tests", and do not attempt to test throughput, latency,
 *       scalability or other performance factors (see the separate "jtreg" tests for a set intended
 *       to check these for the most central aspects of functionality.) So, most tests use the
 *       smallest sensible numbers of threads, collection sizes, etc needed to check basic

    super.setUp();
    CycleDetectingLockFactory factory = CycleDetectingLockFactory.newInstance(Policies.THROW);
    lockA = factory.newReentrantLock("LockA");
    lockB = factory.newReentrantLock("LockB");
    lockC = factory.newReentrantLock("LockC");
    ReentrantReadWriteLock readWriteLockA = factory.newReentrantReadWriteLock("ReadWriteA");
    ReentrantReadWriteLock readWriteLockB = factory.newReentrantReadWriteLock("ReadWriteB");

    super.setUp();
    CycleDetectingLockFactory factory = CycleDetectingLockFactory.newInstance(Policies.THROW);
    lockA = factory.newReentrantLock("LockA");
    lockB = factory.newReentrantLock("LockB");
    lockC = factory.newReentrantLock("LockC");
    ReentrantReadWriteLock readWriteLockA = factory.newReentrantReadWriteLock("ReadWriteA");
    ReentrantReadWriteLock readWriteLockB = factory.newReentrantReadWriteLock("ReadWriteB");

      throws InvocationTargetException, IllegalAccessException {
    T returnValue = factory.invoke(null, args.toArray());
    if (returnValue == null) {
      Assert.assertTrue(
          factory + " returns null but it's not annotated with @Nullable", isNullable(factory));
    }
    return returnValue;
  }

  /**