ITreeAdaptorAddChild Method

Add a child to the tree t. If child is a flat tree (a list), make all in list children of t. Warning: if t has no children, but child does and child isNil then you can decide it is ok to move children to t via t.children = child.children; i.e., without copying the array. Just make sure that this is consistent with have the user will build ASTs. Do nothing if t or child is null.

void AddChild(
	Object t,
	Object child
)

Sub AddChild ( 
	t As Object,
	child As Object
)