private void CreateTransientWorkSteps(WorkItem item, WorkStep expandStep)
{
Debug.Assert(expandStep.Type == WorkStepType.Expand);
var transientRootPath = ExpandedWorkStep.GetTransientPath(expandStep, item);
CreateTransientWorkStepsRecursively(transientRootPath, expandStep, item.Id);
var workItemClass = WorkItemClass.Combine(expandStep.WorkItemClass, item.Id);
var transientWorkStep = WorkStep.New(transientRootPath).UpdateFrom(expandStep).UpdateType(WorkStepType.Transient).UpdateWorkItemClass(workItemClass);
WorkflowRepository.CreateWorkStep(transientWorkStep);
}