Registering Percentage Filter in ConfigureServices()

Startup.cs

using Microsoft.FeatureManagement;
using Microsoft.FeatureManagement.FeatureFilters;

namespace MusicStore.Web
{
    public class Startup
    {
        ...
       
        public void ConfigureServices(IServiceCollection services)
        {
            ...
            
            // Configure Feature Management
            services
                .AddFeatureManagement()
                .AddFeatureFilter<PercentageFilter>(); // register PercentageFilter
            
            ...
        }
    }
}