Registering the IDisabledFeatureHandler implementation

Startup.cs

namespace MusicStore.Web
{
    public class Startup
    {
        ...
        
        public void ConfigureServices(IServiceCollection services)
        {
            ...
            
            services.TryAddSingleton<IHttpContextAccessor, HttpContextAccessor>();

            // Configure Feature Management
            services
                .AddFeatureManagement()
                .AddFeatureFilter<BrowserFilter>()
                .UseDisabledFeaturesHandler(new MusicStoreDisabledFeaturesHandler());
            
            ...
        }
    }
}