code: func (db *BytesConnectionRedis) ListKeys(match string) (keyval.BytesKeyIterator, error) {
  	if db.closed {
  		return nil, fmt.Errorf("ListKeys(%s) called on a closed connection", match)
  	}
  	return listKeys(db, match, nil, nil)
  }
docs: // ListKeys returns an iterator used to traverse keys that start with the given match string.
  // When done traversing, you must close the iterator by calling its Close() method.