code: def filter_by_name_or_id_or_tag(self, query_string, queryset = None):
          
          assert self.Model.NAME_FIELD, \
              'NAME_FIELD is missing on model %s' % self.Model.__name__
          assert self.Model.ID_FIELD, \
              'ID_FIELD is missing on model %s' % self.Model.__name__
          assert self.Model.TAG_FIELD, \
              'TAG_FIELD is missing on model %s' % self.Model.__name__
  
          filter_args = {}
          name, uuid, tag = self._parse_as_name_or_id_or_tag(query_string)
          if name is not None:
              filter_args[self.Model.NAME_FIELD] = name
          if uuid is not None:
              filter_args[self.Model.ID_FIELD+'__startswith'] = uuid
          if tag is not None:
              filter_args[self.Model.TAG_FIELD] = tag
          if queryset is None:
              queryset = self.Model.objects.all()
          return queryset.filter(**filter_args)
docs: Find objects that match the identifier of form {name}@{ID}, {name},
          or @{ID}, where ID may be truncated