The ITreeNode<(Of <(<'T>)>)> type exposes the following members.
Fired when this node's child list has been resorted.
Fired when this node has gained a child.
Fired when this node is attached to a parent.
Fired when this node has lost a child.
Fired when this node is detached from a parent.
Fired when a change (Gain, Loss or Child-Resorting) in this node's subtree has occurred.