`UnmodifiableMultimap.forEach` uses the `Multimap.forEach` default implementation which involves listing entries, and creating a new lambda instead of simply passing the BiConsumer through to the protected instance. This is safe to pass directly though because `forEach(BiConsumer)` is a read-only operation.
*
   * <p><b>Java 8 users:</b> Use the equivalent {@link Comparators#isInOrder(Iterable, Comparator)}
   * instead, since the rest of {@code Ordering} is mostly obsolete (as explained in the class
   * documentation).
   */
  public boolean isOrdered(Iterable<? extends T> iterable) {
    Iterator<? extends T> it = iterable.iterator();
    if (it.hasNext()) {
      T prev = it.next();
      while (it.hasNext()) {
        T next = it.next();
        if (compare(prev, next) > 0) {
          return false;
        }
        prev = next;
      }
    }
    return true;
  }
  /**
   * Returns {@code true} if each element in {@code iterable} after the first is <i>strictly</i>
   * greater than the element that preceded it, according to this ordering. Note that this is always
   * true when the iterable has fewer than two elements.
   *
   * <p><b>Java 8 users:</b> Use the equivalent {@link Comparators#isInStrictOrder(Iterable,
   * Comparator)} instead, since the rest of {@code Ordering} is mostly obsolete (as explained in
   * the class documentation).
   */
  public boolean isStrictlyOrdered(Iterable<? extends T> iterable) {
    Iterator<? extends T> it = iterable.iterator();