code: function encoding(req, res) {
    var obj = req.db.getRawKey(req.args[0], req);
    if(obj === undefined) return res.send(null, null);
    res.send(null, getEncoding(
      req.db.getType(req.args[0]), obj.v, this.state.conf));
  }
docs: Respond to the ENCODING subcommand.