<PackageReference Include="NUnit" Version="4.2.2" />

NUnit.Framework.Internal.Execution.CompositeWorkItem

public class CompositeWorkItem : WorkItem
A CompositeWorkItem represents a test suite and encapsulates the execution of the suite as well as all its child tests.
namespace NUnit.Framework.Internal.Execution { public class CompositeWorkItem : WorkItem { public class OneTimeTearDownWorkItem : WorkItem { public OneTimeTearDownWorkItem(CompositeWorkItem originalItem); } public List<WorkItem> Children { get; } public CompositeWorkItem(TestSuite suite, ITestFilter childFilter); } }