void setDelegates ( Map < K , V > forward , Map < V , K > backward ) { checkState ( delegate == null ) ; checkState ( inverse == null ) ; checkArgument ( forward . isEmpty ( ) ) ; checkArgument ( backward . isEmpty ( ) ) ; checkArgument ( forward != backward ) ; delegate = forward ; inverse = makeInverse ( backward ) ; }
Specifies the delegate maps going in each direction . Called by the constructor and by subclasses during deserialization .