@Contract(pure = true)
  @ApiStatus.ScheduledForRemoval
  @Deprecated
  public static @Unmodifiable @NotNull <E> List<E> immutableList() {
    return Collections.emptyList();
  }
@Contract(pure = true)
  @ApiStatus.ScheduledForRemoval
  @Deprecated
  public static @Unmodifiable @NotNull <E> List<E> immutableList()