| Class | 
                        Description | 
                    
                            | 
                                
                                    ConcurrentReferenceHashMap
                                
                             | 
                            An advanced hash table supporting configurable garbage collection semantics
 of keys and values, optional referential-equality, full concurrency of
 retrievals, and adjustable expected concurrency for updates. | 
                        
                            | 
                                
                                    ConcurrentReferenceHashMap.HashIterator
                                
                             | 
                             | 
                        
                            | 
                                
                                    ConcurrentReferenceHashMap.InitializableEntry
                                
                             | 
                             | 
                        
                            | 
                                
                                    ConcurrentReferenceHashMap.SimpleEntry
                                
                             | 
                             | 
                        
                            | 
                                
                                    ConcurrentReferenceHashMap.WriteThroughEntry
                                
                             | 
                            Custom Entry class used by EntryIterator.next(), that relays setValue
 changes to the underlying map. | 
                        
                            | 
                                
                                    ManagedIdentityConcurrentMap
                                
                             | 
                            This is a basic implementation of a map able to forget its keys could be weak/soft/strong references.  |