code: function() {
        delete self._requestState[transactionId];
        self._localMap.add(nbname, group, address, ttl, self._type);
        self._sendRefresh(nbname, function(error) {
          if (typeof callback === 'function') {
            callback(error, !error);
          }
        });
      }
docs: If we send the required number of registration requests and do not get a conflict response from any other nodes then we can safely declare this name ours.