castList method
Casts an existing iterable
to this data type.
Implementation
List<T> castList(Iterable<Object?> elements) {
final list = newList(elements.length);
final it = elements.iterator;
for (var i = 0; i < elements.length && it.moveNext(); i++) {
list[i] = cast(it.current);
}
return list;
}