Coverage currency in coverables

Coverables have a preferred coverage currency which PolicyCenter uses to synchronize all coverages associated with a coverable. The preferred coverage currency on coverables is in the Coverable.PreferredCoverageCurrency property. After updating the preferred coverage currency on a coverable, PolicyCenter synchronizes the product model. The synchronizeCurrencies method in the gw.web.policy.CoverableCoverageCurrencySynchronizer Gosu class synchronizes the product model.