private void checkKeyType(RefTreeNode n, Class cl) {
Assert.assertEquals(cl, n.getId().getClass());
for (Object c : Util.iterable(n.getChildIterator())) checkKeyType((RefTreeNode) c, cl);
}
private void randomSelection(RefTreeNode n, Set<Key> ks, int ppm, Random rnd) {
if ((rnd.nextInt() & 1023) <= ppm) ks.add(n.getId());
for (Object c : Util.iterable(n.getChildIterator()))
randomSelection((RefTreeNode) c, ks, ppm, rnd);
}
private Set<Key> buildSet(RefTreeNode n, Set<Key> s) {
s.add(n.getId());
for (Object c : Util.iterable(n.getChildIterator())) buildSet((RefTreeNode) c, s);
return s;
}