DOM Document implementation which delegates its operations to a base Document instance.
Node implementation which simply delegates all its methods to a base Node instance.
DelegatingDocument. This tree can be obtained in any of the usual ways (for instance the classes in
When extending these classes, you need to take some care that the
nodes released to the user are the delegating nodes and not the
delegate ('base') nodes on which they are based.
for how to go about extending the implementation.