Java Utililty Methods Iterable to List

if (iterable instanceof List) {
    return (List<T>) iterable;
List<T> result = new ArrayList<>();
for (T item : iterable) {
    result.add(item);
return result;
...

List<T> result = new ArrayList<T>();
for (T t : iterable) {
    result.add(t);
return result;

List<T> answer = new ArrayList<T>();
for (T t : self) {
    answer.add(t);
return answer;