builder.add(-1);
    Object[] prevArray = null;
    for (int i = 0; i < 10; i++) {
      builder.add(i);
      assertNotSame(builder.contents, prevArray);
      prevArray = builder.contents;
      ImmutableSet<Integer> unused = builder.build();
    }
  }

  @GwtIncompatible("Builder impl")
  public void testPresizedBuilderDedups() {

      builder.add(i);
      assertNotSame(builder.contents, prevArray);
      prevArray = builder.contents;
      ImmutableList<Integer> unused = builder.build();
    }
  }

  @GwtIncompatible
  public void testBuilderExactlySizedReusesArray() {
    ImmutableList.Builder<Integer> builder = ImmutableList.builderWithExpectedSize(10);
    Object[] builderArray = builder.contents;
    for (int i = 0; i < 10; i++) {

@ElementTypesAreNonnullByDefault
public final class MinMaxPriorityQueue<E> extends AbstractQueue<E> {

  /**
   * Creates a new min-max priority queue with default settings: natural order, no maximum size, no
   * initial contents, and an initial expected size of 11.
   */
  public static <E extends Comparable<E>> MinMaxPriorityQueue<E> create() {
    return new Builder<Comparable<E>>(Ordering.natural()).create();
  }

  /**

  @Override
  @GwtIncompatible // NavigableSet
  ImmutableSortedSet<C> createDescendingSet() {
    return new DescendingImmutableSortedSet<>(this);
  }

  /** Returns a shorthand representation of the contents such as {@code "[1..100]"}. */
  @Override
  public String toString() {
    return range().toString();
  }

  /**
   * Not supported. {@code ContiguousSet} instances are constructed with {@link #create}. This

            int hash = (auth.getUsername() + auth.getPassword()).hashCode();
            buffer.append(hash).append('@');
        }

        // consider the URL (instead of the id) as this most closely relates to the contents in the repo
        buffer.append(repository.getUrl());

        return buffer.toString();
    }

    private void writeLastUpdated(File touchfile, String key, String error) {

   *
   * <p><b>Warning:</b> If {@code to} represents an existing file, that file will be overwritten
   * with the contents of {@code from}. If {@code to} and {@code from} refer to the <i>same</i>
   * file, the contents of that file will be deleted.
   *
   * <p><b>{@link java.nio.file.Path} equivalent:</b> {@link

 * associated with it: It is not possible to "remove" a value, only to replace it with {@code null},
 * which will still appear when iterating over the table's contents in a foreach loop or a call to a
 * null-hostile method like {@link ImmutableTable#copyOf}. For alternatives, please see <a
 * href="https://github.com/google/guava/wiki/NewCollectionTypesExplained#table">the wiki</a>.
 *

    }

    private static boolean policyEquals(RepositoryPolicy p1, RepositoryPolicy p2) {
        if (p1 == p2) {
            return true;
        }
        // update policy doesn't affect contents
        return p1.isEnabled() == p2.isEnabled() && Objects.equals(p1.getChecksumPolicy(), p2.getChecksumPolicy());
    }

    private static boolean repositoryEquals(RemoteRepository r1, RemoteRepository r2) {

   * PermittedMetaException}.
   */
  protected final class MultiExceptionListIterator implements ListIterator<E> {
    // TODO: track seen elements when order isn't guaranteed
    // TODO: verify contents afterward
    // TODO: something shiny and new instead of Stack
    // TODO: test whether null is supported (create a Feature)
    /**

   * constructed multimap. The new multimap has the same {@link Multimap#entries()} iteration order
   * as the input multimap, except for excluding duplicate mappings.
   *
   * @param multimap the multimap whose contents are copied to this multimap
   */
  public static <K extends @Nullable Object, V extends @Nullable Object>
      LinkedHashMultimap<K, V> create(Multimap<? extends K, ? extends V> multimap) {