question: private void markRemovedDefaultSessionToken ( String site , String token ) { if ( removedDefaultTokens == null ) removedDefaultTokens = new HashMap < > ( 1 ) ; HashSet < String > removedSet = removedDefaultTokens . get ( site ) ; if ( removedSet == null ) { removedSet = new HashSet < > ( 1 ) ; removedDefaultTokens . put ( site , removedSet ) ; } removedSet . add ( token ) ; }
target:  Marks a default session token as removed for a particular site.