} else {
      checkNotNull(multisetToModify);
      checkNotNull(occurrencesToRemove);
      boolean changed = false;
      for (Object o : occurrencesToRemove) {
        changed |= multisetToModify.remove(o);
      }
      return changed;
    }
  }

  /**
   * For each occurrence of an element {@code e} in {@code occurrencesToRemove}, removes one

      refreshIfEmpty();
      boolean changed = delegate.remove(o);
      if (changed) {
        totalSize--;
        removeIfEmpty();
      }
      return changed;
    }

    @Override
    public boolean removeAll(Collection<?> c) {
      if (c.isEmpty()) {
        return false;
      }
      int oldSize = size(); // calls refreshIfEmpty
      boolean changed = delegate.removeAll(c);
      if (changed) {

   *
   * @return {@code true} if the multimap changed
   */
  @CanIgnoreReturnValue
  boolean putAll(@ParametricNullness K key, Iterable<? extends V> values);

  /**
   * Stores all key-value pairs of {@code multimap} in this multimap, in the order returned by
   * {@code multimap.entries()}.
   *
   * @return {@code true} if the multimap changed
   */
  @CanIgnoreReturnValue

  /*
   * Previously we had a field named list that was initialized to the value of
   * collection in setUp(), but that caused problems when a tester changed the
   * value of list or collection but not both.
   */
  protected final List<E> getList() {
    return (List<E>) collection;
  }

  /**
   * {@inheritDoc}
   *

    assertEquals(0.0, fpp);
    // usually completed in less than 200 iterations
    while (fpp != 1.0) {
      boolean changed = bf.put(new Object());
      double newFpp = bf.expectedFpp();
      // if changed, the new fpp is strictly higher, otherwise it is the same
      assertTrue(changed ? newFpp > fpp : newFpp == fpp);
      fpp = newFpp;
    }
  }

  @AndroidIncompatible // slow
  public void testBitSize() {

  public void testAddAllWithEmptyIterator() {
    List<String> alreadyThere = Lists.newArrayList("already", "there");

    boolean changed = Iterators.addAll(alreadyThere, Iterators.<String>emptyIterator());
    assertThat(alreadyThere).containsExactly("already", "there").inOrder();
    assertFalse(changed);
  }

  public void testAddAllToList() {
    List<String> alreadyThere = Lists.newArrayList("already", "there");

    public boolean removeAll(final Collection<?> collection) {
      boolean changed = false;
      Iterator<E> itr = unfiltered.iterator();
      while (itr.hasNext()) {
        E e = itr.next();
        if (predicate.apply(e) && collection.contains(e)) {
          itr.remove();
          changed = true;
        }
      }
      return changed;
    }

    @Override

   * In JDK 1.7.0_51-b13, {@link TypeVariableImpl#equals(Object)} is changed to no longer be equal
   * to custom TypeVariable implementations. As a result, we need to make sure our TypeVariable
   * implementation respects symmetry. Moreover, we don't want to reconstruct a native type variable
   * {@code <A>} using our implementation unless some of its bounds have changed in resolution. This

        if (collection.size() == entry.getValue().size()) {
          entryIterator.remove();
        } else {
          collection.clear();
        }
        changed = true;
      }
    }
    return changed;
  }

  @WeakOuter
  class AsMap extends ViewCachingAbstractMap<K, Collection<V>> {
    @Override
    public boolean containsKey(@CheckForNull Object key) {

  }

  @MapFeature.Require(SUPPORTS_PUT)
  @CollectionSize.Require(ZERO)
  public void testPutPresentKeyDifferentValue() {
    getMap().put(k0(), v0());
    getMap().put(k0(), v1());
    // verify that the bimap is changed, and that the old inverse mapping
    // from v1 -> v0 is deleted
    expectContents(Helpers.mapEntry(k0(), v1()));
  }

  @MapFeature.Require(SUPPORTS_PUT)
  @CollectionSize.Require(ZERO)