docs: function execute(req, res) {
    //console.dir(req.args);
    var hmap = req.db.getKey(req.args[0], req);
    if(hmap === undefined) {
      return res.send(null, [0, []]);
    }
    //console.dir(hmap.getKeys())
    var scanner = new Scanner(
      hmap.getKeys(),
      req.info.cursor,
      req.info.pattern,
      req.info.count,
      hmap.data);
  
    scanner.scan(req, res);
  }