void put(LocalInstance<Integer, Integer> s, int i) {
            r.update(Integer.valueOf(i), s);
        }
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