ConfigureSitecore.cs

namespace Sitecore.Commerce.Plugin.Sample
{
    using System.Reflection;
    using Microsoft.Extensions.DependencyInjection;
    using Sitecore.Commerce.Core;
    using Sitecore.Framework.Configuration;
    using Sitecore.Framework.Pipelines.Definitions.Extensions;

using Sitecore.Services.Examples.Indexing;
    using Sitecore.Commerce.EntityViews;
    using Sitecore.Commerce.Plugin.Catalog;

    public class ConfigureSitecore : IConfigureSitecore
    {
        public void ConfigureServices(IServiceCollection services)
        {
            var assembly = Assembly.GetExecutingAssembly();
            services.RegisterAllPipelineBlocks(assembly);

            services.Sitecore().Pipelines(config => config
                .AddPipeline<IGenerateFacetsPipeline, GenerateFacetsPipeline>(
                    configure => {configure.Add<FacetsBlock>();})
                .ConfigurePipeline<IConfigureServiceApiPipeline>(configure => configure.Add<Services.Examples.Indexing.ConfigureServiceApiBlock>()));

            services.Sitecore().Pipelines(config => config
               .ConfigurePipeline<IGetEntityViewPipeline>(c => c.Add<GetFacetsViewBlock>().After<GetSellableItemDetailsViewBlock>()));



            services.RegisterAllCommands(assembly);
        }
    }
}