@Override
        void put(LocalInstance<Integer, Integer> s, int i) {
            super.put(s, i);
            if (i % 10 == 0) {
                r.view();
            }
        }
Smoke test for multi producer data structure.

<p>
TODO sorely needs nastier cases
</p>

@author <a href="mailto:steinar@yahoo-inc.com">Steinar Knutsen</a>
vespajlib/src/test/java/com/yahoo/concurrent/ThreadLocalDirectoryTestCase.java