CC0061: Public MVC Controller actions should not trigger the analyzer

[hellfirehd]

Diagnostic Id: CC0061: Asynchronous method can be terminated with the 'Async' keyword.
Category: Style
Severity: Info

Triggering Code:

using Microsoft.AspNetCore.Mvc;
...

public class ForgotPasswordController : Controller
{
    [HttpGet]
    public async Task<IActionResult> Index()
    {
        await _signInManager.SignOutAsync();
        _logger.LogInformation("User logged out.");
        return View();
    }
}

When a class inherits from Microsoft.AspNetCore.Mvc.Controller and a public method in the class returns Task<IActionResult> the analyzer should not be triggered. Alternatively if a method is marked with [HttpGet], [HttpPost], etc. the analyzer should not pop.

BUG:

Adding a global suppression with scope NamespaceAndDescendants does not suppress the analyzer.

[assembly: System.Diagnostics.CodeAnalysis.SuppressMessage("Style", "CC0061:Asynchronous method can be terminated with the 'Async' keyword.", Justification = "Public Controller Actions do not need to be named with Async.", Scope = "NamespaceAndDescendants", Target = "CPCA.WebUI.Features")]