clear method
Removes all objects from this list; the length of the list becomes zero.
The list must be growable.
final numbers = <int>[1, 2, 3];
numbers.clear();
print(numbers.length); // 0
print(numbers); // []
Implementation
@override
void clear() {
for (var node in this) {
node.parentNode = null;
}
super.clear();
}