ConfigureSitecore.cs

using Sitecore.Services.Examples.Catalog.Pipelines;
using Sitecore.Services.Examples.Catalog.Pipelines.Blocks;

namespace Sitecore.Services.Examples.Catalog
{
    using System.Reflection;
    using Microsoft.Extensions.DependencyInjection;
    using Commerce.Core;
    using Framework.Configuration;
    using Sitecore.Framework.Pipelines.Definitions.Extensions;
    using Commerce.EntityViews;
    using Sitecore.Commerce.Plugin.Catalog;

    public class ConfigureSitecore : IConfigureSitecore
    {
        /// <summary>
        /// The configure services.
        /// </summary>
        /// <param name="services">
        /// The services.
        /// </param>
        public void ConfigureServices(IServiceCollection services)
        {
            var assembly = Assembly.GetExecutingAssembly();
            services.RegisterAllPipelineBlocks(assembly);

            services.Sitecore().Pipelines(config => config

             .AddPipeline<ICreateUpdateSellableItemPipeline, CreateUpdateSellableItemPipeline>(
                    configure =>
                        {
                            configure.Add<CreateUpdateSellableItemBlock>();
                        })

               .ConfigurePipeline<IConfigureServiceApiPipeline>(configure => configure.Add<ConfigureServiceApiBlock>()));

            services.RegisterAllCommands(assembly);
        }
    }
}