*     ImmutableListMultimap}. If you need a mutable collection, remove the {@code trimToSize}
   *     call, or switch to a {@code HashMap<K, ArrayList<V>>}.
   */
  @Deprecated
  public void trimToSize() {
    for (Collection<V> collection : backingMap().values()) {
      ArrayList<V> arrayList = (ArrayList<V>) collection;
      arrayList.trimToSize();
    }
  }

  /**

    CompactLinkedHashMap<Integer, String> map = CompactLinkedHashMap.createWithExpectedSize(100);
    map.put(1, "a");
    map.put(4, "b");
    map.put(3, "d");
    map.put(2, "c");
    map.trimToSize();
    assertThat(map.entries).hasLength(4);
    assertThat(map.keys).hasLength(4);
    assertThat(map.values).hasLength(4);
    assertThat(map.links).hasLength(4);
    assertEquals(4, map.size());

  }

  public void testTrimToSize() {
    CompactHashMap<Integer, String> map = CompactHashMap.createWithExpectedSize(100);
    for (int i = 0; i < 10; i++) {
      map.put(i, Integer.toString(i));
    }
    map.trimToSize();
    assertThat(map.entries).hasLength(10);
    assertThat(map.keys).hasLength(10);
    assertThat(map.values).hasLength(10);
    assertEquals(10, map.size());
    for (int i = 0; i < 10; i++) {

  public void testTrimToSize() {
    ArrayListMultimap<String, Integer> multimap = ArrayListMultimap.create();
    multimap.put("foo", 1);
    multimap.put("foo", 2);
    multimap.put("bar", 3);
    multimap.trimToSize();
    assertEquals(3, multimap.size());
    assertThat(multimap.get("foo")).containsExactly(1, 2).inOrder();
    assertThat(multimap.get("bar")).contains(3);
  }

    CompactLinkedHashMap<Integer, String> map = CompactLinkedHashMap.createWithExpectedSize(100);
    map.put(1, "a");
    map.put(4, "b");
    map.put(3, "d");
    map.put(2, "c");
    map.trimToSize();
    assertThat(map.entries).hasLength(4);
    assertThat(map.keys).hasLength(4);
    assertThat(map.values).hasLength(4);
    assertThat(map.links).hasLength(4);
    assertEquals(4, map.size());