This interface defines two signatures of the
visit
method; one taking a
Node
, the other a
Property
. When an object implementing this interface is passed
to
Item.accept(ItemVisitor visitor)
the appropriate
visit
method is automatically called, depending on whether the
Item
in question is a
Node
or a
Property
. Different implementations of this interface can be
written for different purposes. It is, for example, possible for the
visit(Node node)
method to call
accept
on the
children of the passed node and thus recurse through the tree performing some
operation on each
Item
.