Removes and returns the last element of the queue.
The queue must not be empty when this method is called.
E removeLast() {
  if (_head == _tail) throw IterableElementError.noElement();
  _modificationCount++;
  _tail = (_tail - 1) & (_table.length - 1);
  E result = _table[_tail];
  _table[_tail] = null;
  return result;
}
    © 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
    https://api.dart.dev/stable/2.5.0/dart-collection/ListQueue/removeLast.html