Method onComplete

github-actions/browserstack/set-browserstack-env.js:2073–2085

(trailers)

          return this[kHandler].onUpgrade(statusCode, headers, socket);
        }
        onComplete(trailers) {
          this.onFinally();
          assert(!this.aborted);
          this.completed = true;
          if (channels.trailers.hasSubscribers) {
            channels.trailers.publish({ request: this, trailers });
          }
          try {
            return this[kHandler].onComplete(trailers);
          } catch (err) {
            this.onError(err);
          }
        }
        onError(error) {
          this.onFinally();
          if (channels.error.hasSubscribers) {