v2/codestructure does not detect NUnit's Theories

[Melandel]

Hello,

Here's a repository I made for reproducing the following observation:

• v2/codestructure detects a test on the following code:

using NUnit.Framework;

namespace demo.omnisharpvim.bug.nunitTheory
{
	public enum Color { Blue, White, Red }
	public class Tests
	{

// Logs show the following properties for the method Test1 below:
//  "Properties": {
//    "testMethodName": "demo.omnisharpvim.bug.nunitTheory.Tests.Test1",
//    "accessibility": "public",
//     "testFramework": "nunit",
//     "static": false
//  }
		[TestCase(Color.Blue)]
		[TestCase(Color.White)]
		[TestCase(Color.Red)]
		public void Test1(Color color)
		{
			Assert.That(new[] { "Blue", "White", "Red" }, Does.Contain(color.ToString()));
		}
	}
}

• However, v2/codestructure does not detect the same test when written under the following form:

using NUnit.Framework;

namespace demo.omnisharpvim.bug.nunitTheory
{
	public enum Color { Blue, White, Red }
	public class Tests
	{

// Logs show the following properties for the method Test1 below:
//  "Properties": {
//    "accessibility": "public",
//     "static": false
//  }
		[Theory]
		public void Test1(Color color)
		{
			Assert.That(new[] { "Blue", "White", "Red" }, Does.Contain(color.ToString()));
		}
	}
}

Is this behaviour expected?