protected override void UpdateConfiguration(WebRouteConfiguration configuration)
{
var controllers = new[] { typeof(SwaggerController), typeof(MetadataController) };
configuration.AddControllers(controllers);
configuration.Routes.Clear();
configuration.InsertFormatter(FormatterFactory.CreateJson(configuration));
IODataPathHandler handler = new SwaggerPathHandler();
IList <IODataRoutingConvention> conventions = ODataRoutingConventions.CreateDefault();
conventions.Insert(0, new SwaggerRoutingConvention());
configuration.MapODataServiceRoute("odata", "odata", GetEdmModel(configuration), handler, conventions);
configuration.EnsureInitialized();
}