How to use the @awaitjs/express.decorateApp function in @awaitjs/express

module.exports = (radiksCollection, centralCollection) => {
  const CentralController = decorateApp(express.Router());
  CentralController.use(bodyParser.json());

  CentralController.postAsync('/', async (req, res) => {
    const {
      key, value, signature, username,
    } = req.body;

    const { publicKey } = await radiksCollection.findOne({ username, radiksType: 'BlockstackUser' });
    const _id = `${username}-${key}`;
    if (verifyECDSA(_id, publicKey, signature)) {
      await centralCollection.updateOne({ _id }, { $set: value }, { upsert: true });
      return res.json({
        success: true,
      });
    }
    return res.status(400).json({

const makeApiController = (db) => {
  const Router = decorateApp(express.Router());
  const radiksData = db.collection(COLLECTION);

  Router.getAsync('/messages', async (req, res) => {
    let messages = await aggregateMessages(radiksData, req.query);

    let username = req.query.fetcher || req.universalCookies.get('username');
    if (username) username = username.replace(/"/g, '');
    messages = transformMessageVotes(messages, username);

    res.json({ messages });
  });

  Router.getAsync('/avatar/:username', async (req, res) => {
    const { username } = req.params;
    const user = await radiksData.findOne({ _id: username });
    if (!user) {

const makeApiController = (db) => {
  const Router = decorateApp(express.Router());
  const radiksData = db.collection(COLLECTION);

  Router.getAsync('/messages', async (req, res) => {
    let messages = await aggregateMessages(radiksData, req.query);

   
    let username = (req.query.fetcher || req.universalCookies.get('username'));
    if (username) username = username.replace(/"/g, '');
    messages = await transformMessageVotes(messages, username);
 
    res.json({ messages });
  });

  Router.getAsync('/avatar/:username', async (req, res) => {
    const { username } = req.params;
    const user = await radiksData.findOne({ _id: username });