Object o = png.getAttribute("globalHelp");
assertNotNull("global statistics created", o);
assertEquals("Right class", Invocations.class, o.getClass());
Invocations inv = (Invocations)o;
Set<Invocations.One> set = inv.getTopTen();
assertEquals("Two " + set, 2, set.size());
Invocations.One[] arr = new Invocations.One[2];
set.toArray(arr);