toUint64List method
Creates a Uint64List from this pointer by copying the pointer's data.
length is the length of the array.
null is returned if the pointer is equal to nullptr.
Implementation
Uint64List? toUint64List(int length) {
  if (this == nullptr) {
    return null;
  }
  final Uint64List list = Uint64List(length);
  for (int i = 0; i < length; i++) {
    list[i] = this[i];
  }
  return list;
}