code: private void checkOthers(Collidable objectA, Entry<Point, Set<Collidable>> current, Integer acceptedGroup)
      {
          final Map<Point, Set<Collidable>> acceptedElements = collidables.get(acceptedGroup);
          final Point point = current.getKey();
          if (acceptedElements.containsKey(point))
          {
              checkPoint(objectA, acceptedElements, point);
          }
      }
docs: Check others element.
  
  @param objectA The collidable reference.
  @param current The current group to check.
  @param acceptedGroup The accepted group.