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.