reset method
Reset with empty slots First slot is .delete
Implementation
void reset({int? count, int? indexInOld, E? oldItem}) {
if (slots.isNotEmpty != true) {
slots = <ListDiffs<E>>[];
for (var x = 0; x < count!; x++) {
/// Add old/new
slots.add(ListDiffs.builder(args));
}
}
slots[0] = combine(
slot: slots[0],
change: DeleteDiff<E>(args, indexInOld, 1),
);
}