Table<R, C, V> synchronizedTable(Table<R, C, V> table) {
    return Synchronized.table(table, null);
  }

  static boolean equalsImpl(Table<?, ?, ?> table, @CheckForNull Object obj) {
    if (obj == table) {
      return true;
    } else if (obj instanceof Table) {
      Table<?, ?, ?> that = (Table<?, ?, ?>) obj;

    @GwtIncompatible // serialization
    Object writeReplace() {
      return super.writeReplace();
    }
  }

  @Override
  public boolean equals(@CheckForNull Object obj) {
    return Lists.equalsImpl(this, obj);
  }

  @Override
  public int hashCode() {
    int hashCode = 1;
    int n = size();
    for (int i = 0; i < n; i++) {
      hashCode = 31 * hashCode + get(i).hashCode();

      String text = String.valueOf(getElement());
      int n = getCount();
      return (n == 1) ? text : (text + " x " + n);
    }
  }

  /** An implementation of {@link Multiset#equals}. */
  static boolean equalsImpl(Multiset<?> multiset, @CheckForNull Object object) {
    if (object == multiset) {
      return true;
    }
    if (object instanceof Multiset) {
      Multiset<?> that = (Multiset<?>) object;
      /*

      String text = String.valueOf(getElement());
      int n = getCount();
      return (n == 1) ? text : (text + " x " + n);
    }
  }

  /** An implementation of {@link Multiset#equals}. */
  static boolean equalsImpl(Multiset<?> multiset, @CheckForNull Object object) {
    if (object == multiset) {
      return true;
    }
    if (object instanceof Multiset) {
      Multiset<?> that = (Multiset<?>) object;
      /*

    FilteredSet(Set<E> unfiltered, Predicate<? super E> predicate) {
      super(unfiltered, predicate);
    }

    @Override
    public boolean equals(@CheckForNull Object object) {
      return equalsImpl(this, object);
    }

    @Override
    public int hashCode() {
      return hashCodeImpl(this);
    }
  }

      hashCode = ~~hashCode;
      // needed to deal with GWT integer overflow
    }
    return hashCode;
  }

  /** An implementation of {@link List#equals(Object)}. */
  static boolean equalsImpl(List<?> thisList, @CheckForNull Object other) {
    if (other == checkNotNull(thisList)) {
      return true;
    }
    if (!(other instanceof List)) {
      return false;
    }

    @GwtIncompatible // serialization
    Object writeReplace() {
      return super.writeReplace();
    }
  }

  @Override
  public boolean equals(@CheckForNull Object object) {
    return Maps.equalsImpl(this, object);
  }

  abstract boolean isPartialView();

  @Override
  public int hashCode() {
    return Sets.hashCodeImpl(entrySet());
  }

  boolean isHashCodeFast() {

    @GwtIncompatible // serialization
    Object writeReplace() {
      return super.writeReplace();
    }
  }

  @Override
  public boolean equals(@CheckForNull Object object) {
    return Maps.equalsImpl(this, object);
  }

  abstract boolean isPartialView();

  @Override
  public int hashCode() {
    return Sets.hashCodeImpl(entrySet());
  }

  boolean isHashCodeFast() {

      }
    }

    @Override
    public boolean equals(@CheckForNull Object o) {
      if (o == this) {
        return true;
      }
      synchronized (mutex) {
        return Sets.equalsImpl(delegate(), o);
      }
    }

    @Override
    public boolean remove(@CheckForNull Object o) {
      synchronized (mutex) {
        return Maps.removeEntryImpl(delegate(), o);
      }
    }

      }
    }

    @Override
    public boolean equals(@CheckForNull Object o) {
      if (o == this) {
        return true;
      }
      synchronized (mutex) {
        return Sets.equalsImpl(delegate(), o);
      }
    }

    @Override
    public boolean remove(@CheckForNull Object o) {
      synchronized (mutex) {
        return Maps.removeEntryImpl(delegate(), o);
      }