private static XdbModel BuildModel()
{
XdbModelBuilder modelBuilder = new XdbModelBuilder("PushSubscriptionsModel", new XdbModelVersion(1, 0));
// Facets and events here
modelBuilder.RegisterType <PushSubscription>(true);
modelBuilder.DefineFacet <Contact, PushSubscriptions>(FacetNames.PushSubscriptions);
return(modelBuilder.BuildModel());
}