public static IEnumerable <Step> TraverseSteps(this Steps root)
{
if (root == null)
{
throw new ArgumentNullException();
}
return(RecursiveEnumerableExtensions.Traverse(root.StepList, s => s.StepList));
}
public IEnumerable <Step> TraverseSteps()
{
return(RecursiveEnumerableExtensions.Traverse(StepList, s => s.StepList));
}
