Find the code snippet getAllUserByID() operation as follows:

 // to get one specific user details
    @GetMapping("/user/{id}")
    fun getUser(@PathVariable(name = "id") id: Long): UserModel {
        return userRepository.findById(id).get()
    }

The @GetMapping(path = ["/user/{id}"]) annotation is the URL path of "/user/{id}", and it is a  GET request with a specific ID. Here, we return findById(id).get() to get the specific user details from the database.