/** Constructor for use by subclasses. */
  protected ForwardingSet() {}

  @Override
  protected abstract Set<E> delegate();

  @Override
  public boolean equals(@CheckForNull Object object) {
    return object == this || delegate().equals(object);
  }

  @Override
  public int hashCode() {
    return delegate().hashCode();
  }

  /**

        return result;
      }
    }
    return 0;
  }

  @Override
  public boolean equals(@CheckForNull Object object) {
    if (object == this) {
      return true;
    }
    if (object instanceof CompoundOrdering) {
      CompoundOrdering<?> that = (CompoundOrdering<?>) object;
      return Arrays.equals(this.comparators, that.comparators);
    }
    return false;
  }

  @Override

    LegacyComparable that = (LegacyComparable) object;
    return this.value.compareTo(that.value);
  }

  @Override
  public boolean equals(@Nullable Object object) {
    if (object instanceof LegacyComparable) {
      LegacyComparable that = (LegacyComparable) object;
      return this.value.equals(that.value);
    }
    return false;
  }

  @Override
  public int hashCode() {
    return value.hashCode();
  }

  }

  @Override
  public List<E> subList(int fromIndex, int toIndex) {
    return delegate().subList(fromIndex, toIndex);
  }

  @Override
  public boolean equals(@CheckForNull Object object) {
    return object == this || delegate().equals(object);
  }

  @Override
  public int hashCode() {
    return delegate().hashCode();
  }

  /**

    return comparator.compare(a, b);
  }

  @Override
  public boolean equals(@CheckForNull Object object) {
    if (object == this) {
      return true;
    }
    if (object instanceof ComparatorOrdering) {
      ComparatorOrdering<?> that = (ComparatorOrdering<?>) object;
      return this.comparator.equals(that.comparator);
    }
    return false;
  }

  @Override
  public int hashCode() {

      monitor.leave();
    }
  }

  /**
   * Removes a single instance of the specified element from this queue, if it is present. More
   * formally, removes an element {@code e} such that {@code o.equals(e)}, if this queue contains
   * one or more such elements. Returns {@code true} if this queue contained the specified element
   * (or equivalently, if this queue changed as a result of the call).
   *

    @Override
    public String toString() {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.toString();
    }

    @Override
    public boolean equals(@Nullable Object o) {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.equals(o);
    }

    @Override
    public int hashCode() {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.hashCode();
    }

    @Override

    }
  }

  private interface Equals {
    @Override
    boolean equals(@Nullable Object obj);

    @Override
    int hashCode();

    @Override
    String toString();
  }

  private static class NoDelegateToEquals implements Equals {

    private static Function<Equals, Equals> WRAPPER =
        new Function<Equals, Equals>() {
          @Override

    return Integer.MAX_VALUE;
  }

  /**
   * Removes a single instance of the specified element from this queue, if it is present. More
   * formally, removes an element {@code e} such that {@code o.equals(e)}, if this queue contains
   * one or more such elements. Returns {@code true} if and only if this queue contained the
   * specified element (or equivalently, if this queue changed as a result of the call).
   *

    @Override
    public boolean equals(@CheckForNull Object obj) {
      if (obj == this) {
        return true;
      }
      if (obj instanceof Cell) {
        Cell<?, ?, ?> other = (Cell<?, ?, ?>) obj;
        return Objects.equal(getRowKey(), other.getRowKey())
            && Objects.equal(getColumnKey(), other.getColumnKey())
            && Objects.equal(getValue(), other.getValue());
      }