/**
 * @swagger
 *
 * definitions:
 *   NewUser:
 *     type: object
 *     required:
 *       - username
 *       - password
 *     properties:
 *       username:
 *         type: string
 *       password:
 *         type: string
 *         format: password
 *   User:
 *     allOf:
 *       - $ref: '#/definitions/NewUser'
 *       - required:
 *         - id
 *       - properties:
 *         id:
 *           type: integer
 *           format: int64
 */

/**
 * @swagger
 * /users:
 *   get:
 *     description: Returns users
 *     produces:
 *      - application/json
 *     responses:
 *       200:
 *         description: users
 *         schema:
 *           type: array
 *           items:
 *             $ref: '#/definitions/User'
 */
app.get('/users', (req, res) => {
  // Your implementation logic comes here ...
});

/**
 * @swagger
 *
 * /users:
 *   post:
 *     description: Creates a user
 *     produces:
 *       - application/json
 *     parameters:
 *       - name: user
 *         description: User object
 *         in:  body
 *         required: true
 *         type: string
 *         schema:
 *           $ref: '#/definitions/NewUser'
 *     responses:
 *       200:
 *         description: users
 *         schema:
 *           $ref: '#/definitions/User'
 */
app.post('/users', (req, res) => {
  // Your implementation logic comes here ...
});