Method onUpgrade

github-actions/browserstack/set-browserstack-env.js:2068–2072

(statusCode, headers, socket)

          }
        }
        onUpgrade(statusCode, headers, socket) {
          assert(!this.aborted);
          assert(!this.completed);
          return this[kHandler].onUpgrade(statusCode, headers, socket);
        }
        onComplete(trailers) {
          this.onFinally();
          assert(!this.aborted);