MediatR one notification handler about mediatr HOT 8 CLOSED

using MediatR;
using Microsoft.Extensions.DependencyInjection;
using mytest;

// Create a new service collection and add mediatr
var services = new ServiceCollection();
services.AddMediatR(cfg => cfg.RegisterServicesFromAssembly(typeof(Program).Assembly));


// Build the service provider
var serviceProvider = services.BuildServiceProvider();

using var scope = serviceProvider.CreateScope();
var mediatr = scope.ServiceProvider.GetRequiredService<IMediator>();
await mediatr.Publish(new Notification1());
await mediatr.Publish(new Notification2());


internal record NotificationBase : INotification
{
}

internal record Notification1 : NotificationBase
{
}
internal record Notification2 : NotificationBase
{
}

internal class NotificationHandler1 : INotificationHandler<Notification1>
{
    public Task Handle(Notification1 notification, CancellationToken cancellationToken)
    {
        Console.WriteLine("NotificationHandler1");
        return Task.CompletedTask;
    }
}
internal class NotificationHandler2 : INotificationHandler<Notification2>
{
    public Task Handle(Notification2 notification, CancellationToken cancellationToken)
    {
        Console.WriteLine("NotificationHandler2");
        return Task.CompletedTask;
    }
}

internal class NotificationHandlerBase : INotificationHandler<NotificationBase>
{
    public Task Handle(NotificationBase notification, CancellationToken cancellationToken)
    {
        Console.WriteLine($"NotificationHandlerBase with {notification.ToString()}");
        return Task.CompletedTask;
    }
}