* Collection<V>>} to {@code Map<K, List<V>>}.
   *
   * @since 15.0
   */
  @SuppressWarnings("unchecked")
  // safe by specification of ListMultimap.asMap()
  public static <K extends @Nullable Object, V extends @Nullable Object> Map<K, List<V>> asMap(
      ListMultimap<K, V> multimap) {
    return (Map<K, List<V>>) (Map<K, ?>) multimap.asMap();

   * Collection<V>>} to {@code Map<K, List<V>>}.
   *
   * @since 15.0
   */
  @SuppressWarnings("unchecked")
  // safe by specification of ListMultimap.asMap()
  public static <K extends @Nullable Object, V extends @Nullable Object> Map<K, List<V>> asMap(
      ListMultimap<K, V> multimap) {
    return (Map<K, List<V>>) (Map<K, ?>) multimap.asMap();

   * <p><b>Warning:</b> when this method is used, the resulting cache will use identity ({@code ==})
   * comparison to determine equality of keys. Its {@link Cache#asMap} view will therefore
   * technically violate the {@link Map} specification (in the same way that {@link IdentityHashMap}
   * does).
   *
   * <p>Entries with keys that have been garbage collected may be counted in {@link Cache#size}, but

 *
 * ### Equal URLs should be equal
 *
 * These two URLs are semantically identical, but `java.net.URI` disagrees:
 *
 *  * http://host:80/
 *
 *  * http://host
 *
 * Both the unnecessary port specification (`:80`) and the absent trailing slash (`/`) cause URI to
 * bucket the two URLs separately. This harms URI's usefulness in collections. Any application that