keys ->
                            path.create(transform(keys, key -> immutableEntry(key, new Object()))),
                        keys ->
                            path.create(transform(keys, key -> immutableEntry(new Object(), key))),
                        keys -> path.create(transform(keys, key -> immutableEntry(key, key)))))
            .collect(toImmutableList()),
        n -> n * log(n),
        ImmutableList.of(

    Iterator<Entry<E>> entryIterator = entrySet().iterator();
    if (!entryIterator.hasNext()) {
      return null;
    }
    Entry<E> entry = entryIterator.next();
    return Multisets.immutableEntry(entry.getElement(), entry.getCount());
  }

  @Override
  public @Nullable Entry<E> lastEntry() {
    return delegate().lastEntry();
  }

  /**

    assertTrue(entries.contains(immutableEntry("a", true)));
    assertTrue(entries.contains(Maps.<String, @Nullable Boolean>immutableEntry("b", null)));
    assertTrue(
        entries.contains(Maps.<@Nullable String, @Nullable Boolean>immutableEntry(null, null)));

    assertFalse(entries.contains(Maps.<String, @Nullable Boolean>immutableEntry("c", null)));

      assertThat(cache.asMap().values()).containsExactly(value1, value2);
      assertThat(cache.asMap().entrySet())
          .containsExactly(immutableEntry(key1, value1), immutableEntry(key2, value2));
    }
  }

  public void testInvalidate() {
    for (LoadingCache<Key, String> cache : caches()) {
      Key key1 = new Key(1);
      String value1 = key1.toString();

    assertThat(builder.build().entries()).containsExactly(Maps.immutableEntry("key", "value"));
  }

  public void testBuilderWithExpectedKeysPositive() {
    ImmutableListMultimap.Builder<String, String> builder =
        ImmutableListMultimap.builderWithExpectedKeys(1);
    builder.put("key", "value");
    assertThat(builder.build().entries()).containsExactly(Maps.immutableEntry("key", "value"));
  }

    @Override
    public SampleElements<Entry<Country, String>> samples() {
      return new SampleElements<>(
          immutableEntry(Country.CANADA, "DOLLAR"),
          immutableEntry(Country.CHILE, "PESO"),
          immutableEntry(Country.UK, "POUND"),
          immutableEntry(Country.JAPAN, "YEN"),
          immutableEntry(Country.SWITZERLAND, "FRANC"));
    }

    @SuppressWarnings("unchecked")
    @Override

    forwarding.put("b", 2);
    assertEquals(immutableEntry("b", 2), forwarding.lastEntry());
    forwarding.put("c", 3);
    assertEquals(immutableEntry("c", 3), forwarding.lastEntry());
    forwarding.put("a", 1);
    assertEquals(immutableEntry("c", 3), forwarding.lastEntry());
    forwarding.remove("c");
    assertEquals(immutableEntry("b", 2), forwarding.lastEntry());
  }

    assertEquals(immutableEntry("foo", 5), entryIterator.next());
    assertEquals(immutableEntry("bar", 4), entryIterator.next());
    assertEquals(immutableEntry("foo", 3), entryIterator.next());
    assertEquals(immutableEntry("cow", 2), entryIterator.next());
    assertEquals(immutableEntry("bar", 1), entryIterator.next());

      SampleElements<E> samples = gen.samples();
      return new SampleElements<>(
          Multisets.immutableEntry(samples.e0(), 3),
          Multisets.immutableEntry(samples.e1(), 4),
          Multisets.immutableEntry(samples.e2(), 1),
          Multisets.immutableEntry(samples.e3(), 5),
          Multisets.immutableEntry(samples.e4(), 2));
    }

    @Override
    public Set<Multiset.Entry<E>> create(Object... entries) {

    @Override
    public SampleElements<Entry<String, Integer>> samples() {
      return new SampleElements<>(
          immutableEntry("bar", 1),
          immutableEntry("bar", 2),
          immutableEntry("foo", 3),
          immutableEntry("bar", 3),
          immutableEntry("cat", 2));
    }

    @Override
    public Collection<Entry<String, Integer>> create(Object... elements) {