*     the same lambda function as passed into {@link #using(Function)}.
 *     <p>This class is scheduled to be removed in October 2019.
 */
// TODO(b/68134636): Remove by 2019-10
@Deprecated
@Beta
@GwtCompatible
public abstract class TreeTraverser<T> {
  /** Constructor for use by subclasses. */
  public TreeTraverser() {}

  /**

     * replacement. If {@code unsafeReplacement} is {@code null} then no replacement will occur, if
     * it is {@code ""} then the unsafe characters are removed from the output.
     *
     * @param unsafeReplacement the string to replace unsafe characters
     * @return the builder instance
     */
    @CanIgnoreReturnValue

    evictAllConnections(pool)
    assertThat(pool.connectionCount()).isEqualTo(2)
    forceConnectionsToExpire(pool, expireTime)
    assertThat(pool.connectionCount()).isEqualTo(2)

    // Excess connections aren't removed until they idle out, even if no longer needed
    setPolicy(pool, address, AddressPolicy(1))
    assertThat(pool.connectionCount()).isEqualTo(2)
    forceConnectionsToExpire(pool, expireTime)

        }
    }

    /**
     * Removes a scheduled job completely from the job manager.
     *
     * @param scheduledJob the scheduled job to remove
     * @throws ScheduledJobException if the job cannot be removed
     */
    public void remove(final ScheduledJob scheduledJob) {
        try {

      iterator.next();
      iterator.remove();
      assertEquals(initialSize - 1, map.size());
      // (We can't assert that the values collection no longer contains the
      // removed value, because the underlying map can have multiple mappings
      // to the same value.)
      assertInvariants(map);
      assertThrows(IllegalStateException.class, iterator::remove);
    } else {
      iterator.next();

    threadPool.shutdown();
    threadPool.awaitTermination(300, SECONDS);
  }

  /**
   * Calls get() repeatedly from many different threads, and tests that all of the removed entries
   * (removed because of size limits or expiration) trigger appropriate removal notifications.
   */
  @GwtIncompatible // QueuingRemovalListener

    threadPool.shutdown();
    threadPool.awaitTermination(300, SECONDS);
  }

  /**
   * Calls get() repeatedly from many different threads, and tests that all of the removed entries
   * (removed because of size limits or expiration) trigger appropriate removal notifications.
   */
  @GwtIncompatible // QueuingRemovalListener

   * class, we use a suboptimal int[] representation to avoid introducing a new type that can impede
   * class-unloading when ThreadLocals are not removed.
   */
  static final ThreadLocal<int @Nullable []> threadHashCode = new ThreadLocal<>();

  /** Generator of new random hash codes */
  static final Random rng = new Random();

    @Override
    public boolean remove(@Nullable Object key, @Nullable Object value) {
      return map.entrySet().remove(Maps.immutableEntry(key, value));
    }

    @Override
    public Set<V> removeAll(@Nullable Object key) {
      Set<V> values = new HashSet<>(2);
      if (!map.containsKey(key)) {
        return values;
      }
      values.add(map.remove(key));
      return values;
    }

    @Override
    public boolean remove(@Nullable Object key, @Nullable Object value) {
      return map.entrySet().remove(Maps.immutableEntry(key, value));
    }

    @Override
    public Set<V> removeAll(@Nullable Object key) {
      Set<V> values = new HashSet<>(2);
      if (!map.containsKey(key)) {
        return values;
      }
      values.add(map.remove(key));
      return values;
    }