code: def getAnalysisServicesVocabulary(self):
          
          bsc = getToolByName(self, 'bika_setup_catalog')
          brains = bsc(portal_type='AnalysisService',
                       is_active=True)
          items = [(b.UID, b.Title) for b in brains]
          items.insert(0, ("", ""))
          items.sort(lambda x, y: cmp(x[1], y[1]))
          return DisplayList(list(items))
docs: Get all active Analysis Services from Bika Setup and return them as Display List.