}

  public void testFilterSimple() {
    Iterator<String> unfiltered = Lists.newArrayList("foo", "bar").iterator();
    Iterator<String> filtered = Iterators.filter(unfiltered, Predicates.equalTo("foo"));
    List<String> expected = Collections.singletonList("foo");
    List<String> actual = Lists.newArrayList(filtered);
    assertEquals(expected, actual);
  }

    assertTrue(set.isEmpty());
    set.add(new Derived("foo"));
    set.add(new Derived("bar"));
    assertThat(set).containsExactly(new Derived("bar"), new Derived("foo")).inOrder();
  }

  public void testNewTreeSetEmptyNonGeneric() {
    TreeSet<LegacyComparable> set = Sets.newTreeSet();
    assertTrue(set.isEmpty());
    set.add(new LegacyComparable("foo"));
    set.add(new LegacyComparable("bar"));
    assertThat(set)

  public void testImmutableEntry() {
    Entry<String, Integer> e = Maps.immutableEntry("foo", 1);
    assertEquals("foo", e.getKey());
    assertEquals(1, (int) e.getValue());
    try {
      e.setValue(2);
      fail("UnsupportedOperationException expected");
    } catch (UnsupportedOperationException expected) {
    }
    assertEquals("foo=1", e.toString());
    assertEquals(101575, e.hashCode());
  }

  public void testImmutableEntry() {
    Entry<String, Integer> e = Maps.immutableEntry("foo", 1);
    assertEquals("foo", e.getKey());
    assertEquals(1, (int) e.getValue());
    try {
      e.setValue(2);
      fail("UnsupportedOperationException expected");
    } catch (UnsupportedOperationException expected) {
    }
    assertEquals("foo=1", e.toString());
    assertEquals(101575, e.hashCode());
  }

  }

  public void testFilterSimple() {
    Iterator<String> unfiltered = Lists.newArrayList("foo", "bar").iterator();
    Iterator<String> filtered = Iterators.filter(unfiltered, Predicates.equalTo("foo"));
    List<String> expected = Collections.singletonList("foo");
    List<String> actual = Lists.newArrayList(filtered);
    assertEquals(expected, actual);
  }

   *   Iterator<E> it = set.iterator();
   *   while (it.hasNext()) {
   *     foo(it.next());
   *   }
   * }
   * }</pre>
   *
   * <p>or:
   *
   * <pre>{@code
   * NavigableSet<E> set = synchronizedNavigableSet(new TreeSet<E>());
   * NavigableSet<E> set2 = set.descendingSet().headSet(foo);
   *  ...
   * synchronized (set) { // Note: set, not set2!!!

  }

  public void testMethod_declaredBySuperclass() throws Exception {
    Method toStringMethod = Object.class.getMethod("toString");
    ImmutableList<String> list = ImmutableList.of("foo");
    assertEquals(list.toString(), TypeToken.of(List.class).method(toStringMethod).invoke(list));
  }

  public <T extends Number & List<String>> void testMethod_returnType_resolvedAgainstTypeBound()

     * LF<? extends @Nullable V>. That might be better: There's currently no difference between the
     * outputs users get when calling this with <Foo> and calling it with <@Nullable Foo>. The only
     * difference is that calling it with <Foo> won't work when an input Future has a @Nullable
     * type. So why even make that error possible by giving callers the choice?
     *

  }

  public void testMethod_declaredBySuperclass() throws Exception {
    Method toStringMethod = Object.class.getMethod("toString");
    ImmutableList<String> list = ImmutableList.of("foo");
    assertEquals(list.toString(), TypeToken.of(List.class).method(toStringMethod).invoke(list));
  }

  public <T extends Number & List<String>> void testMethod_returnType_resolvedAgainstTypeBound()

   * ...
   * synchronized (multimap) {  // Synchronizing on multimap, not values!
   *   Iterator<V> i = values.iterator(); // Must be in synchronized block
   *   while (i.hasNext()) {
   *     foo(i.next());
   *   }
   * }
   * }</pre>
   *
   * <p>Failure to follow this advice may result in non-deterministic behavior.
   *
   * <p>Note that the generated multimap's {@link Multimap#removeAll} and {@link