public void Setup()
 {
     configuration = ConfigurationManager.GetSection("features") as FeatureToggleConfiguration;
 }
 public static IServiceCollection AddFeatureToggleClient(this IServiceCollection services, FeatureToggleConfiguration configuration = null)
 {
     services.AddSingleton <IFeatureToggleConfiguration>(configuration ?? new FeatureToggleConfiguration());
     services.AddSingleton <IFeatureToggleClient, FeatureToggleClient>();
     services.AddSingleton <IFeatureToggleService, FeatureToggleService>();
     return(services);
 }