added extension method

src/Infrastructure.EventBus/ServiceCollectionExtensions.cs

@@ -42,4 +42,12 @@ public static class ServiceCollectionExtensions
         });
         return services;
     }
+
+    public static void SubscribeEvent<TEvent, TEvenHandler>(this IServiceProvider services)
+        where TEvent : IntegrationEvent where TEvenHandler : IIntegrationEventHandler<TEvent>
+    {
+        ArgumentNullException.ThrowIfNull(services);
+        var eventBus = services.GetRequiredService<IEventBus>();
+        eventBus.Subscribe<TEvent, TEvenHandler>();
+    }
 }