docs: def get(self, request, *args, **kwargs):
          """ return list of open 311 services  """
          # init django rest framework specific stuff
          serializer_class = self.get_serializer_class()
          context = self.get_serializer_context()
  
          # init empty list
          services = []
  
          # loop over each service
          for service_type in SERVICES.keys():
              # initialize serializers for layer
              services.append(
                  serializer_class(
                      object(),
                      context=context,
                      service_type=service_type
                  ).data
              )
  
          return Response(services)