*
 * @author Mike Bostock
 * @author Jared Levy
 * @since 2.0
 */
@GwtCompatible
public final class Functions {
  private Functions() {}

  /**
   * A function equivalent to the method reference {@code Object::toString}. The function simply
   * invokes {@code toString} on its argument and returns the result. It throws a {@link
   * NullPointerException} on null input.
   *

      }

      /*
       * If we're about to complete the TimeoutFuture, we want to release our reference to it.
       * Otherwise, we'll pin it (and its result) in memory until the timeout task is GCed. (The
       * need to clear our reference to the TimeoutFuture is the reason we use a *static* nested
       * class with a manual reference back to the "containing" class.)
       *

  }

  /**
   * Returns a predicate that evaluates to {@code true} if the object reference being tested is
   * null.
   *
   * <p><b>Discouraged:</b> Prefer using either {@code x -> x == null} or {@code Objects::isNull},
   * but note that lambdas and method references do not have human-readable {@link #toString()}
   * representations and are not serializable.
   */

Config(t){if("object"==typeof(t=super._getConfig(t)).reference&&!l(t.reference)&&"function"!=typeof t.reference.getBoundingClientRect)throw new TypeError(`${pt.toUpperCase()}: Option "reference" provided type "object" without a required "getBoundingClientRect" method.`);return t}_createPopper(){if(void 0===s)throw new TypeError("Bootstrap's dropdowns require Popper (https://popper.js.org)");let t=this._element;"parent"===this._config.reference?t=this._parent:l(this._config.reference)?t=c(this._c...

    #    ; UPDATE_USER       = $$AccessContext$$.getAccessUserOnThread()
    #}
}
# ----------------/
#

        .isFalse();
    assertEquals(1, Booleans.asList(ARRAY_FALSE_TRUE).lastIndexOf(true));
    List<Boolean> reference = Booleans.asList(ARRAY_FALSE);
    assertEquals(Booleans.asList(ARRAY_FALSE), reference);
    // Explicitly call `equals`; `assertEquals` might return fast
    assertThat(reference.equals(reference)).isTrue();
  }

  public void testAsListHashcode() {
    assertThat(Booleans.asList(EMPTY).hashCode()).isEqualTo(1);

  // there needs to be separate classes for primary and descending multiset, where the primary one
  // would hold {@code @LazyInit @RetainedWith @Nullable} reference to its descending multiset, and
  // the other {@code final} reference.
  @Override
  public SortedMultiset<E> descendingMultiset() {
    UnmodifiableSortedMultiset<E> result = descendingMultiset;
    if (result == null) {

@GwtCompatible
@NullMarked
public class PeekingIteratorTest extends TestCase {

  /**
   * Version of {@link IteratorTester} that compares an iterator over a given collection of elements
   * (used as the reference iterator) against a {@code PeekingIterator} that *wraps* such an
   * iterator (used as the target iterator).
   *
   * <p>This IteratorTester makes copies of the master so that it can later verify that {@link

// Since this class only needs CAS on one field, we can avoid this bug by extending AtomicReference
// instead of using an AtomicReferenceFieldUpdater. This reference stores Thread instances
// and DONE/INTERRUPTED - they have a common ancestor of Runnable.
abstract class InterruptibleTask<T extends @Nullable Object>
    extends AtomicReference<@Nullable Runnable> implements Runnable {

import com.google.errorprone.annotations.DoNotMock;

/**
 * Implemented by references that have code to run after garbage collection of their referents.
 *
 * @see FinalizableReferenceQueue
 * @author Bob Lee
 * @since 2.0
 */
@DoNotMock("Use an instance of one of the Finalizable*Reference classes")
@J2ktIncompatible
@GwtIncompatible
public interface FinalizableReference {
  /**