<PackageReference Include="NUnit" Version="4.3.0" />

NUnit.Framework.Interfaces.TestMessage

public sealed class TestMessage
The TestMessage class holds a message sent by a test to all listeners
namespace NUnit.Framework.Interfaces { public sealed class TestMessage { public string Message { get; } public string Destination { get; } public string TestId { get; } public TestMessage(string destination, string text, string testId); public string ToXml(); } }