docs: function (query, revMin, revMax) {
      if (typeof query === 'string') {
        query = { aggregateId: query };
      }
  
      if (!query.aggregateId) {
        var err = new Error('An aggregateId should be passed!');
        debug(err);
        if (callback) callback(err);
        return;
      }
  
      return this.store.streamEventsByRevision(query, revMin, revMax);
    }