assertFalse(Ascii.equalsIgnoreCase("x", ""));
    assertTrue(Ascii.equalsIgnoreCase(LOWER, UPPER));
    assertTrue(Ascii.equalsIgnoreCase(UPPER, LOWER));
    // Create new strings here to avoid early-out logic.
    assertTrue(Ascii.equalsIgnoreCase(new String(IGNORED), new String(IGNORED)));
    // Compare to: "\u00c1".equalsIgnoreCase("\u00e1") == true
    assertFalse(Ascii.equalsIgnoreCase("\u00c1", "\u00e1"));

    return (FluentFuture<V>) Futures.catchingAsync(this, exceptionType, fallback, executor);
  }

  /**
   * Returns a future that delegates to this future but will finish early (via a {@link
   * TimeoutException} wrapped in an {@link ExecutionException}) if the specified timeout expires.
   * If the timeout expires, not only will the output future finish, but also the input future

   *
   * @since 16.0
   */
  public static boolean equalsIgnoreCase(CharSequence s1, CharSequence s2) {
    // Calling length() is the null pointer check (so do it before we can exit early).
    int length = s1.length();
    if (s1 == s2) {
      return true;
    }
    if (length != s2.length()) {
      return false;
    }
    for (int i = 0; i < length; i++) {

  private OverflowAvoidingLockSupport() {}

  static void parkNanos(@CheckForNull Object blocker, long nanos) {
    // Even in the extremely unlikely event that a thread unblocks itself early after only 68 years,
    // this is indistinguishable from a spurious wakeup, which LockSupport allows.
    LockSupport.parkNanos(blocker, min(nanos, MAX_NANOSECONDS_THRESHOLD));
  }

       * consistency with how weak references are cleared). That's a behavior change -- arguably the
       * removal of a feature.
       *
       * Fortunately, exceptions rarely contain references to expensive resources.
       */

      //
      seenExceptionsLocal = newConcurrentHashSet();
      /*

import javax.annotation.CheckForNull;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Implementation of {@code Futures#withTimeout}.
 *
 * <p>Future that delegates to another but will finish early (via a {@link TimeoutException} wrapped
 * in an {@link ExecutionException}) if the specified duration expires. The delegate future is
 * interrupted and cancelled if it times out.
 */
@J2ktIncompatible
@GwtIncompatible

   * SuppressWarnings("unchecked")
   * Set<String> badStrings = (Set) Sets.intersection(
   *     aFewBadObjects, manyBadStrings);
   * }</pre>
   *
   * <p>This is unfortunate, but should come up only very rarely.
   */
  public static <E extends @Nullable Object> SetView<E> intersection(
      final Set<E> set1, final Set<?> set2) {
    checkNotNull(set1, "set1");
    checkNotNull(set2, "set2");

          @Override
          public void run() {
            /*
             * This is similar to the above test, but this time we're making sure that we recognize
             * that the output Future is done early not because of an exception but because of a
             * cancellation.
             */
            secondFuture.setException(subsequentFailure);
          }
        },
        directExecutor());

 *
 * <ul>
 *   <li><a href="https://dagger.dev/producers.html">Dagger Producers</a>
 * </ul>
 *
 * <p>The main purpose of {@link #addListener addListener} is to support this chaining. You will
 * rarely use it directly, in part because it does not provide direct access to the {@code Future}
 * result. (If you want such access, you may prefer {@link Futures#addCallback

        if (!throwIfDuplicateKeys) {
          // We want to retain only the last-put value for any given key, before sorting.
          // This could be improved, but orderEntriesByValue is rather rarely used anyway.
          localAlternatingKeysAndValues = lastEntryForEachKey(localAlternatingKeysAndValues, size);
          if (localAlternatingKeysAndValues.length < alternatingKeysAndValues.length) {