How to use the @feathersjs/express.notFound function in @feathersjs/express

// !code: express_rest // !end
));
app.configure(socketio(
  // !code: express_socketio // !end
));

// Configure other middleware (see `middleware/index.js`)
app.configure(middleware);
// Set up our services (see `services/index.js`)
app.configure(services);
// Set up event channels (see channels.js)
app.configure(channels);
// !code: config_middle // !end

// Configure a middleware for 404s and the error handler
app.use(express.notFound());
app.use(express.errorHandler({ logger }));
// !code: config_end // !end

app.hooks(appHooks);

const moduleExports = app;
// !code: exports // !end
module.exports = moduleExports;

// !code: funcs // !end
// !code: end // !end

// Configure database adapters
app.configure(sequelize);

// Configure other middleware (see `middleware/index.ts`)
app.configure(middleware);
// Configure authentication (see `authentication.ts`)
app.configure(authentication);
// Set up our services (see `services/index.ts`)
app.configure(services);
// Set up event channels (see channels.ts)
app.configure(channels);
// !code: config_middle // !end

// Configure a middleware for 404s and the error handler
app.use(express.notFound());
app.use(express.errorHandler({ logger }));
// !code: config_end // !end

app.hooks(appHooks);

const moduleExports = app;
// !code: exports // !end
export default moduleExports;

// !code: funcs // !end
// !code: end // !end

app.configure(socketio(
  // !code: express_socketio // !end
));
// Configure database adapters
app.configure(sequelizeMssql);

// Configure other middleware (see `middleware/index.js`)
app.configure(middleware);
// Set up our services (see `services/index.js`)
app.configure(services);
// Set up event channels (see channels.js)
app.configure(channels);
// !code: config_middle // !end

// Configure a middleware for 404s and the error handler
app.use(express.notFound());
app.use(express.errorHandler({ logger }));
// !code: config_end // !end

app.hooks(appHooks);

const moduleExports = app;
// !code: exports // !end
module.exports = moduleExports;

// !code: funcs // !end
// !code: end // !end

app.configure(express.rest());
app.configure(socketio());


// Configure other middleware (see `middleware/index.js`)
app.configure(middleware);
// Set up our services (see `services/index.js`)
app.configure(services);
// Set up event channels (see channels.js)
app.configure(channels);
// Configure authentication (see `authentication.js`)
app.configure(authentication);
// !code: config_middle // !end

// Configure a middleware for 404s and the error handler
app.use(express.notFound());
app.use(express.errorHandler({ logger }));
// !code: config_end // !end

app.hooks(appHooks);

const moduleExports = app;
// !code: exports // !end
module.exports = moduleExports;

// !code: funcs // !end
// !code: end // !end

app.configure(socketio(
  // !code: express_socketio // !end
));

// Configure other middleware (see `middleware/index.ts`)
app.configure(middleware);
// Configure authentication (see `authentication.ts`)
app.configure(authentication);
// Set up our services (see `services/index.ts`)
app.configure(services);
// Set up event channels (see channels.ts)
app.configure(channels);
// !code: config_middle // !end

// Configure a middleware for 404s and the error handler
app.use(express.notFound());
app.use(express.errorHandler({ logger }));
// !code: config_end // !end

app.hooks(appHooks);

const moduleExports = app;
// !code: exports // !end
export default moduleExports;

// !code: funcs // !end
// !code: end // !end

));
// Configure database adapters
app.configure(mongoose);

// Configure other middleware (see `middleware/index.ts`)
app.configure(middleware);
// Configure authentication (see `authentication.ts`)
app.configure(authentication);
// Set up our services (see `services/index.ts`)
app.configure(services);
// Set up event channels (see channels.ts)
app.configure(channels);
// !code: config_middle // !end

// Configure a middleware for 404s and the error handler
app.use(express.notFound());
app.use(express.errorHandler({ logger }));
// !code: config_end // !end

app.hooks(appHooks);

const moduleExports = app;
// !code: exports // !end
export default moduleExports;

// !code: funcs // !end
// !code: end // !end

app.use('/', express.static( __dirname + '../../../dist/pwa-mat' ));

// Set up Plugins and providers
app.configure(express.rest());
app.configure(socketio());

// Configure other middleware (see `middleware/index.js`)
app.configure(middleware);
app.configure(authentication);
// Set up our services (see `services/index.js`)
app.configure(services);
// Set up event channels (see channels.js)
app.configure(channels);

// Configure a middleware for 404s and the error handler
app.use(express.notFound());
app.use(express.errorHandler({ logger }));

app.hooks(appHooks);

module.exports = app;

app.use('/', express.static( __dirname + '../../../dist/pwa-mat' ))

// Set up Plugins and providers
app.configure(express.rest())
app.configure(socketio())

// Configure other middleware (see `middleware/index.js`)
app.configure(middleware)
app.configure(authentication)
// Set up our services (see `services/index.js`)
app.configure(services)
// Set up event channels (see channels.js)
app.configure(channels)

// Configure a middleware for 404s and the error handler
app.use(express.notFound())
app.use(express.errorHandler({ logger }))

app.hooks(appHooks)

module.exports = app

// Set up Plugins and providers
app.configure(express.rest());


app.configure(mongoose);

// Configure other middleware (see `middleware/index.js`)
app.configure(middleware);
app.configure(authentication);
// Set up our services (see `services/index.js`)
app.configure(services);
// Set up event channels (see channels.js)
app.configure(channels);

// Configure a middleware for 404s and the error handler
app.use(express.notFound());
app.use(express.errorHandler({ logger } as any));

app.hooks(appHooks);

export default app;

// Set up Plugins and providers
app.configure(express.rest());
app.configure(socketio());

app.configure(mongoose);

// Configure other middleware (see `middleware/index.js`)
app.configure(middleware);
app.configure(authentication);
// Set up our services (see `services/index.js`)
app.configure(services);
// Set up event channels (see channels.js)
app.configure(channels);

// Configure a middleware for 404s and the error handler
app.use(express.notFound());
app.use(express.errorHandler({ logger }));

app.hooks(appHooks);

module.exports = app;