Fire event on metadata load
We could use an event indicating that the MetadataStore is loaded. As discussed in stackoverflow http://stackoverflow.com/questions/14146841/how-to-attach-to-metadataloaded-event-or-equivalent-in-breeze-js/20470781#20470781 I see that the recommended solution is to call fetchMetadata. But, we have experienced – more than a little – that sometimes fetchMetadata fails, but subsequent queries succeed. Preventing queries while retrying fetchMetadata would be a lot of work. With an event, we could very easily handle metadata initialization – in our case validations.