SelectionSpec Traversal

The selectSet array in ObjectSpec and TraversalSpec objects can include TraversalSpec objects and SelectionSpec objects. SelectionSpec is the base class for TraversalSpec objects. SelectionSpec defines the name property. You can use a SelectionSpec object in a selectSet array as a reference to a named TraversalSpec object. By using SelectionSpec references, you can reuse a TraversalSpec and you can define recursive traversal.