public void writeLines(Stream<? extends CharSequence> lines, String lineSeparator)
      throws IOException {
    writeLines(lines.iterator(), lineSeparator);
  }

  private void writeLines(Iterator<? extends CharSequence> lines, String lineSeparator)
      throws IOException {
    checkNotNull(lineSeparator);

    try (Writer out = openBufferedStream()) {

   *
   * Similarly, we avoid having those methods *implemented* in terms of *other* TestSet methods
   * that will perform holdsLock assertions:
   *
   * - For iterator(), we can accomplish that by not overriding iterator() at all. That way, we
   *   inherit an implementation that forwards to the delegate collection, which performs no
   *   holdsLock assertions.
   *

      return standardIndexOf(element);
    }

    @Override
    public int lastIndexOf(Object element) {
      return standardLastIndexOf(element);
    }

    @Override
    public Iterator<T> iterator() {
      return listIterator();
    }

    @Override
    public ListIterator<T> listIterator() {
      return listIterator(0);
    }

    @Override

      return standardIndexOf(element);
    }

    @Override
    public int lastIndexOf(Object element) {
      return standardLastIndexOf(element);
    }

    @Override
    public Iterator<T> iterator() {
      return listIterator();
    }

    @Override
    public ListIterator<T> listIterator() {
      return listIterator(0);
    }

    @Override

    checkNotNull(elements); // for GWT
    return (elements instanceof Collection)
        ? copyOf((Collection<? extends E>) elements)
        : copyOf(elements.iterator());
  }

  public static <E> ImmutableList<E> copyOf(Iterator<? extends E> elements) {
    return copyFromCollection(Lists.newArrayList(elements));
  }

  public static <E> ImmutableList<E> copyOf(Collection<? extends E> elements) {

   * queue's iterator:
   *
   * {@snippet :
   * Queue<E> queue = Queues.synchronizedQueue(MinMaxPriorityQueue.<E>create());
   * ...
   * queue.add(element); // Needn't be in synchronized block
   * ...
   * synchronized (queue) { // Must synchronize on queue!
   *   Iterator<E> i = queue.iterator(); // Must be in synchronized block
   *   while (i.hasNext()) {

    map.putInstance(String.class, "test");
    assertEquals(TypeToken.of(String.class), map.entrySet().iterator().next().getKey());
    assertEquals("test", map.entrySet().iterator().next().getValue());
    assertThrows(
        UnsupportedOperationException.class, () -> map.entrySet().iterator().next().setValue(1));
  }

  public void testEntrySetToArrayMutationThrows() {
    map.putInstance(String.class, "test");

        Map<String, String> props = new HashMap<>();

        try (Stream<String> stream = Files.lines(configFile, StandardCharsets.UTF_8)) {
            Iterator<String> lines = stream.iterator();
            boolean foundOrigin = false;
            while (lines.hasNext()) {
                String line = lines.next().trim();
                if (line.startsWith(";") || line.startsWith("#")) {

    }
    return new RegularImmutableList<E>(elements, length);
  }

  ImmutableList() {}

  // This declaration is needed to make List.iterator() and
  // ImmutableCollection.iterator() consistent.
  @Override
  public UnmodifiableIterator<E> iterator() {
    return listIterator();
  }

  @Override
  public UnmodifiableListIterator<E> listIterator() {
    return listIterator(0);
  }

    this.map = map;
  }

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

  @Override
  public UnmodifiableIterator<V> iterator() {
    return new UnmodifiableIterator<V>() {
      final UnmodifiableIterator<Entry<K, V>> entryItr = map.entrySet().iterator();

      @Override
      public boolean hasNext() {
        return entryItr.hasNext();
      }

      @Override
      public V next() {