Sample controller with logging and using scopes

ValuesController.cs

[Route("api/[controller]")]
[ApiController]
public class ValuesController : ControllerBase
{
    private readonly ILogger<ValuesController> _logger;

    public ValuesController(ILogger<ValuesController> logger)
    {
        _logger = logger ?? throw new ArgumentNullException(nameof(logger));
    }

    // GET api/values/some_name
    [HttpGet("{userId}")]
    public ActionResult<string> Get(string userId)
    {
        using (_logger.BeginScope("my scope"))
        {
            _logger.LogInformation("Handling sample request");

            return "Hello " + userId;
        }
    }
  }