code: function done(err) {
      if (err) return handle.error(err);
  
      // Evaluate all the attach methods
      for (const attachMethod of self.attachMethods) {
        attachMethod.call(handle);
      }
  
      // No match found, send 404
      if (match.handler === null) {
        err = new Error('Not Found');
        err.statusCode = 404;
        return handle.error(err);
      }
  
      // match found, relay to HandlerCollection
      match.handler(req.method, handle, match.params, match.splat);
    }
docs: The handle constructor is done