ConfigureServicesWithDecoratorsNaive.cs

void ConfigureServices(IServiceCollection services)
{
    services
        .AddLogging(configure =>
        {
            configure.AddConsole();
            configure.SetMinimumLevel(LogLevel.Information);
        })
        .AddSingleton<IImportantDataProvider, ImportantDataProvider>()
        .AddSingleton<IExampleService>(sp =>
        {
            var service = new ExampleService(sp.GetRequiredService<IImportantDataProvider>());

            var decorated = new ExampleServiceClassicDecorator(service, 
                sp.GetRequiredService<ILogger<ExampleServiceClassicDecorator>>());

            return decorated;
        })
}