Multiset.Entry<E> entry = getOnlyElement(getMultiset().entrySet());
    assertEquals(3, entry.getCount());
    Iterator<E> itr = getMultiset().iterator();
    itr.next();
    itr.remove();
    assertEquals(2, entry.getCount());
    itr.next();
    itr.remove();
    itr.next();
    itr.remove();
    assertEquals(0, entry.getCount());
  }

  @CollectionSize.Require(SEVERAL)

      @SuppressWarnings("unchecked") // it's definitely equal to a K
      K k = (K) key;
      List<V> result = Lists.newArrayList();
      Iterator<V> itr = collection.iterator();
      while (itr.hasNext()) {
        V v = itr.next();
        if (satisfies(k, v)) {
          itr.remove();
          result.add(v);
        }
      }
      if (result.isEmpty()) {
        return null;

    public void testGetResources() throws Exception {
        final String name = TestCase.class.getName().replace('.', '/') + ".class";
        final Iterator<URL> itr = ClassLoaderUtil.getResources(this.getClass(), name);
        assertThat(itr, is(notNullValue()));
        final URL url = itr.next();
        assertThat(url, is(notNullValue()));
    }

    /**
     * @throws Exception
     */
    @Test

  @CollectionFeature.Require(SUPPORTS_ITERATOR_REMOVE)
  public void testKeysEntrySetIteratorRemove() {
    Multiset<K> keys = multimap().keys();
    Iterator<Multiset.Entry<K>> itr = keys.entrySet().iterator();
    assertEquals(Multisets.immutableEntry(k0(), 1), itr.next());
    itr.remove();
    assertTrue(multimap().isEmpty());
  }

  @CollectionSize.Require(SEVERAL)
  @MapFeature.Require(SUPPORTS_REMOVE)
  public void testKeysEntrySetRemove() {

  @AndroidIncompatible // depends on details of GC
  public void testFreesNextReference() {
    Iterator<Object> itr =
        new AbstractIterator<Object>() {
          @Override
          public Object computeNext() {
            return new Object();
          }
        };
    WeakReference<Object> ref = new WeakReference<>(itr.next());
    GcFinalization.awaitClear(ref);
  }

  public void testReentrantHasNext() {

    this.delegate.replaceAll(function);
    inverse.delegate.clear();
    Entry<K, V> broken = null;
    Iterator<Entry<K, V>> itr = this.delegate.entrySet().iterator();
    while (itr.hasNext()) {
      Entry<K, V> entry = itr.next();
      K k = entry.getKey();
      V v = entry.getValue();
      K conflict = inverse.delegate.putIfAbsent(v, k);
      if (conflict != null) {

    }

    @Override
    public boolean hasNext() {
      return !stack.isEmpty();
    }

    @Override
    public T next() {
      Iterator<T> itr = stack.getLast(); // throws NSEE if empty
      T result = checkNotNull(itr.next());
      if (!itr.hasNext()) {
        stack.removeLast();
      }
      Iterator<T> childItr = children(result).iterator();
      if (childItr.hasNext()) {

    firstInKeyInsertionOrder = null;
    lastInKeyInsertionOrder = null;
    modCount++;
  }

  @Override
  public int size() {
    return size;
  }

  private abstract class Itr<T extends @Nullable Object> implements Iterator<T> {
    @CheckForNull BiEntry<K, V> next = firstInKeyInsertionOrder;
    @CheckForNull BiEntry<K, V> toRemove = null;
    int expectedModCount = modCount;

  @AndroidIncompatible // depends on details of GC
  public void testFreesNextReference() {
    Iterator<Object> itr =
        new AbstractIterator<Object>() {
          @Override
          public Object computeNext() {
            return new Object();
          }
        };
    WeakReference<Object> ref = new WeakReference<>(itr.next());
    GcFinalization.awaitClear(ref);
  }

  @AndroidIncompatible // depends on details of GC
  public void testFreesNextReference() {
    Iterator<Object> itr =
        new AbstractIterator<Object>() {
          @Override
          public Object computeNext() {
            return new Object();
          }
        };
    WeakReference<Object> ref = new WeakReference<>(itr.next());
    GcFinalization.awaitClear(ref);
  }