title: Hazelcast transaction map and map store
body: <p>I'm using <code>Hazelcast</code> with its awesome feature: transaction.</p>
  <p>I have an <code>IMap</code> which config <code>MapStore</code> to save/load (lazy) data from backed DB.</p>
  <p>When I use <code>TransactionContext.getMap(mapName).getForUpdate(key)</code>, does Hazelcast auto load data from MapStore for the input key?</p>