private static IServiceRegistrar Register(this IServiceRegistrar serviceRegistrar, Type serviceType, Type implementationType, RegistrationScope registrationScope)
        {
            switch (registrationScope)
            {
            case RegistrationScope.Singleton:
                return(serviceRegistrar.AddSingleton(serviceType, implementationType));

            case RegistrationScope.Scoped:
                return(serviceRegistrar.AddScoped(serviceType, implementationType));

            case RegistrationScope.Transient:
                return(serviceRegistrar.AddTransient(serviceType, implementationType));

            default:
                break;
            }

            return(serviceRegistrar);
        }