code: public Container pack(List<BoxItem> boxes, long deadline) {
  		return pack(boxes, filterByVolumeAndWeight(toBoxes(boxes, false), Arrays.asList(containers), 1), deadLinePredicate(deadline));
  	}
docs: Return a container which holds all the boxes in the argument
  
  @param boxes    list of boxes to fit in a container
  @param deadline the system time in millis at which the search should be aborted
  @return index of container if match, -1 if not