code: function registerMiddleware(app, config) {
      /* Check for basic auth */
      if (config.authorization && typeof config.authorization.basic === 'object' && config.authorization.basic) {
        registerBasicAuth(app, config.authorization.basic);
      }
      // Check if we have favicon
      registerFavicon(app, config);
      /* Parse root middlewares. */
      for (let i = 0; i < this[rootMiddleware].length; i++) {
        app.use(this[rootMiddleware][i]);
      }
      delete this[rootMiddleware];
      /* Parse Form data */
      app.use(bodyParser.urlencoded({
        extended: false,
        limit: config.options.payloadLimit,
        parameterLimit: 500
      }));
      /* Parse JSON in the body */
      app.use(bodyParser.json({
        limit: config.options.payloadLimit
      }));
      /* attach any middleware */
      for (let i = 0; i < this[middleware].length; i++) {
        app.use(this[middleware][i]);
      }
      this[middleware] = [];
    }
docs: /*
  Includes any custom middleware functions.