public static <E> ImmutableList<E> of(E... elements) {
    final ImmutableList<E> list = new ImmutableList<>(elements.length);
    Collections.addAll(list, elements);
    return list;
  }
A dummy representation of an immutable set. This can be used temporarily as a type until we have
an actual non-guava implementation.
fbcore/src/main/java/com/facebook/common/internal/ImmutableList.java