IServiceCollection extension to add all types of a particular type within the same assembly

DependencyInjectionHelper.cs

using Microsoft.Extensions.DependencyInjection;


public static class DependencyInjectionHelper
{
    public static IServiceCollection AddByType<T>(this IServiceCollection serviceCollection, ServiceLifetime serviceLifetime = ServiceLifetime.Transient)
    {
        var types = typeof(T).Assembly.GetTypes()
            .Where(x => !x.IsAbstract && x.IsClass && x.GetInterface(typeof(T).Name) == typeof(T));
        foreach (var type in types)
        {
            serviceCollection.Add(new ServiceDescriptor(typeof(T), type, serviceLifetime));
        }
        return serviceCollection;
    }
}