AspNet Core MVC attribute routing lower/kebab case controller placeholder replacement

KebabRoutingConvention.cs

/**
Takes something like this

[Route("api/customer/{customerId:int}/[controller]")]
public class SpecialOrderController : Controller
{
    // ...

    [HttpGet("~/api/[controller]")]
    [Produces(typeof(IEnumerable<SpecialOrderResponse>))]
    public IActionResult Get() => Ok(db.Query(new GetAllSpecialOrders()));
}

and with Swashbuckle / Ahoy, generates swagger documentation like

GET /api/customer/{customerId}/special-order
GET /api/special-order
*/

public class KebabRoutingConvention : IControllerModelConvention
{
    public void Apply(ControllerModel controller)
    {
        foreach (var selector in controller.Selectors)
        {
            selector.AttributeRouteModel = replaceControllerTemplate(selector, controller.ControllerName);
        }

        foreach (var selector in controller.Actions.SelectMany(a => a.Selectors))
        {
            selector.AttributeRouteModel = replaceControllerTemplate(selector, controller.ControllerName);
        }

        AttributeRouteModel replaceControllerTemplate(SelectorModel selector, string name)
        {
            return selector.AttributeRouteModel != null
                ? new AttributeRouteModel
                {
                    Template = selector.AttributeRouteModel.Template
                    .Replace("[controller]", PascalToKebabCase(name))
                }
                : null;
        }

        string PascalToKebabCase(string value)
        {
            if (string.IsNullOrEmpty(value))
            {
                return value;
            }

            return Regex.Replace(
                value,
                "(?<!^)([A-Z][a-z]|(?<=[a-z])[A-Z])",
                "-$1",
                RegexOptions.Compiled)
                .Trim()
                .ToLower();
        }
    } 
}

Startup.cs

public class Startup
{
    // ...
    
    public void ConfigureServices(IServiceCollection services)
    {
        services.AddMvc(options =>
            options.Conventions.Add(new KebabRoutingConvention())
        );
    }

    // ...
}