public void Configuration(IAppBuilder app, Func <IContainer> containerBuilder)
{
#if DEBUG
LocalConfiguration.SetEnvironmentVariables();
#endif
var container = (containerBuilder ?? DefaultContainerBuilder)();
var config = new HttpConfiguration();
EnableCors(config);
config.MapHttpAttributeRoutes();
config.DependencyResolver = new AutofacWebApiDependencyResolver(container);
app.UseAutofacMiddleware(container);
app.UseWebApi(config);
}