docs: def iter(self, match="*", count=1000):
          """ Iterates the set members in :prop:key_prefix of :prop:_client
              @match: #str pattern to match items by
              @count: the user specified the amount of work that should be done
                  at every call in order to retrieve elements from the collection
  
              -> yields members of the set
          """
          _loads = self._loads
          for m in self._client.sscan_iter(
             self.key_prefix, match="*", count=count):
              yield _loads(m)