private static void addOwnerClassesToSet(Collection<? extends RefElement> references, Set<? super RefClass> set) {
    final RefJavaUtil refUtil = RefJavaUtil.getInstance();
    for (RefElement reference : references) {
      final RefClass refClass = reference instanceof RefClass ? (RefClass)reference : refUtil.getOwnerClass(reference);
      if (refClass != null && !refClass.isAnonymous() && !refClass.isLocalClass()) {
        set.add(refClass);
      }
    }
  }
private static void addOwnerClassesToSet(Collection<? extends RefElement> references, Set<? super RefClass> set)