}

  @Override
  public void clear() {
    if (!range.hasLowerBound() && !range.hasUpperBound()) {
      // We can do this in O(n) rather than removing one by one, which could force rebalancing.
      for (AvlNode<E> current = header.succ(); current != header; ) {
        AvlNode<E> next = current.succ();

        current.elemCount = 0;

      this.fromCollection = checkNotNull(fromCollection);
      this.function = checkNotNull(function);
    }

    @Override
    public void clear() {
      fromCollection.clear();
    }

    @Override
    public boolean isEmpty() {
      return fromCollection.isEmpty();
    }

    @Override
    public Iterator<T> iterator() {

    };
  }

  abstract static class ElementSet<E extends @Nullable Object> extends Sets.ImprovedAbstractSet<E> {
    abstract Multiset<E> multiset();

    @Override
    public void clear() {
      multiset().clear();
    }

    @Override
    public boolean contains(@CheckForNull Object o) {
      return multiset().contains(o);
    }

    @Override

  }

  @Override
  public void clear() {
    if (needsAllocArrays()) {
      return;
    }
    this.firstEntry = ENDPOINT;
    this.lastEntry = ENDPOINT;
    if (links != null) {
      Arrays.fill(links, 0, size(), 0);
    }
    super.clear();
  }

  /*

   *
   * @throws UnsupportedOperationException always
   * @deprecated Unsupported operation.
   */
  @Deprecated
  @Override
  @DoNotCall("Always throws UnsupportedOperationException")
  public final void clear() {
    throw new UnsupportedOperationException();
  }

  /**
   * Guaranteed to throw an exception and leave the {@code RangeMap} unmodified.
   *
   * @throws UnsupportedOperationException always

        }
        remaining--;
        /*
         * requireNonNull is safe because `remaining` starts at 0, forcing us to initialize
         * `element` above. After that, we never clear it.
         */
        return requireNonNull(element);
      }
    };
  }

  @LazyInit @CheckForNull private transient ImmutableList<E> asList;

  @Override
  public ImmutableList<E> asList() {

            slowRemoveIfForRemainingElements(list, predicate, to, from);
            return true;
          }
        }
        to++;
      }
    }

    // Clear the tail of any remaining items
    list.subList(to, list.size()).clear();
    return from != to;
  }

  private static <T extends @Nullable Object> void slowRemoveIfForRemainingElements(

     */
    /*
     * TODO(cpovirk): use Object[] instead of E[] in the mainline? (The backport is different and
     * doesn't need this suppression, but we keep it to minimize diffs.) Generally be more clear
     * about when we have an Object[] vs. a Comparable[] or other array type in internalArray? If we
     * used Object[], we might be able to optimize toArray() to use clone() sometimes. (See
     * cl/592273615 and cl/592273683.)

    assertEquals(RemovalCause.REPLACED, notification.getCause());
    assertTrue(listener.isEmpty());

    // inactive
    Object value3 = new Object();
    map.clear();
    listener.clear();
    assertEquals(0, segment.count);
    table.set(index, entry);
    assertTrue(segment.storeLoadedValue(key, hash, valueRef, value3));
    assertSame(value3, segment.get(key, hash));

    assertEquals(RemovalCause.REPLACED, notification.getCause());
    assertTrue(listener.isEmpty());

    // inactive
    Object value3 = new Object();
    map.clear();
    listener.clear();
    assertEquals(0, segment.count);
    table.set(index, entry);
    assertTrue(segment.storeLoadedValue(key, hash, valueRef, value3));
    assertSame(value3, segment.get(key, hash));