Tree

Part of utilities.

Tree contains code to support immutable attribute Trees. The following classes are avaialble

Class | Brief description
Tree	an interface defining the type of the labels, attributes and treenode types. It also contains a function get(nodeLabel) which returns a treenode.
TreeNode	The immutable tree node. Each node has getLabel, getAttribute, getChildren and getChild
TreeMatcher	interface to get a list of differences between two trees
LabelThenAttributeMatcher	TreeMatcher implementation, that compares the labels and the attributes