docs: public void removeFromTo(int from, int to) {
  	checkRangeFromTo(from, to, size);
  	int numMoved = size - to - 1;
  	if (numMoved >= 0) {
  		System.arraycopy(elements, to+1, elements, from, numMoved);
  		fillFromToWith(from+numMoved, size-1, null); //delta
  	}
  	int width = to-from+1;
  	if (width>0) size -= width;
  }