code: private static double getMinPlusMaxObject(List<? extends SpatialComparable> objs, int s, int dim) {
      SpatialComparable sobj = objs.get(s);
      return sobj.getMin(dim) + sobj.getMax(dim);
    }
docs: Compute getMin(dim) + getMax(dim) for the spatial object.
  
  @param objs Objects
  @param s index
  @param dim Dimensionality
  @return Min+Max