function findValue(context) {
      let loop = context;
      do {
          if(loop.hasOwnProperty("values"))
            return loop.values;
          loop = loop.back();
      } while (loop != loop.back(-1))
        return {};
    }

    function recordValue(name) {
      return function(value) {
        let x = findValue(this);
        x[name] = value;
        this.values = x;
        return value;
      }
    }