code: def getPeopleFilters(self):
          
          yield AllPeopleFilter()
          yield VIPPeopleFilter()
          for getPeopleFilters in self._gatherPluginMethods('getPeopleFilters'):
              for peopleFilter in getPeopleFilters():
                  yield peopleFilter
          for tag in sorted(self.getPeopleTags()):
              yield TaggedPeopleFilter(tag)
docs: Return an iterator of L{IPeopleFilter} providers available to this
          organizer's store.