private Set<PersonRenderer> personRendererSet(
            final Map<String, Set<PersonRenderer>> aMap, final String place) {
        Set<PersonRenderer> locatedPersons = aMap.get(place);
        if (locatedPersons == null) {
            locatedPersons = new TreeSet<>(new PersonRendererComparator());
            aMap.put(place, locatedPersons);
        }
        return locatedPersons;
    }
private Set < PersonRenderer > personRendererSet ( final Map < String , Set < PersonRenderer > > aMap , final String place ) { Set < PersonRenderer > locatedPersons = aMap . get ( place ) ; if ( locatedPersons == null ) { locatedPersons = new TreeSet < > ( new PersonRendererComparator ( ) ) ; aMap . put ( place , locatedPersons ) ; } return locatedPersons ; }
@param aMap the map
@param place the place
@return the set for the place from the map