docs: public static <T extends Comparable<T>> Pair<T> minMax(Iterable<T> items) {
  		Iterator<T> iterator = items.iterator();
  		if(!iterator.hasNext()) {
  			return null;
  		}
  		
  		T min = iterator.next();
  		T max = min;
  		
  		while(iterator.hasNext()) {
  			T item = iterator.next();
  			if(item.compareTo(min) < 0) {
  				min = item;
  			}
  			if(item.compareTo(max) > 0) {
  				max = item;
  			}
  		}
  		
  		return new Pair<T>(min, max);
  	}