static TreeSet<S> sizeCalculation_shouldSkipObject_set = littreeset(tlft([[
  java.io.
  java.lang.reflect.
  java.awt.
  javax.swing.
]]);

sbool sizeCalculation_shouldSkipObject(O o) {
  if (o instanceof Reference) true;
  if (startsWithOneOf_treeSet(className(o), sizeCalculation_shouldSkipObject_set)) true;
  false;
}