See: Description

| Interface | Description | 
|---|---|
| Hierarchy<O> | 
 This interface represents an (external) hierarchy of objects. 
 | 
| Hierarchy.Iter<O> | 
 Iterator interface. 
 | 
| ModifiableHierarchy<O> | 
 Modifiable Hierarchy. 
 | 
| Class | Description | 
|---|---|
| HashMapHierarchy<O> | 
 Centralized hierarchy implementation, using a HashMap of Lists. 
 | 
| HashMapHierarchy.Rec<O> | 
 Hierarchy pointers for an object. 
 | 
Delegate implementation of a hierarchy.