@Contract(value = " -> new", pure = true)
  public static @NotNull <V> ConcurrentIntObjectMap<@NotNull V> createConcurrentIntObjectWeakValueMap() {
    return new ConcurrentIntKeyWeakValueHashMap<>();
  }
@Contract(value = " -> new", pure = true)
  public static @NotNull <V> ConcurrentIntObjectMap<@NotNull V> createConcurrentIntObjectWeakValueMap()