php - Codeigniter error: Parse error: syntax error, unexpected

Parse error: syntax error, unexpected '(', expecting identifier (T_STRING) or variable (T_VARIABLE) or '{' or '$' in C:\xampp\htdocs\code\application\controllers\user.php on line 14

class User extends CI_Controller
{

    public function __construct()
    {
        parent:: __construct();
        $this->load->model('user_model');
    }

    public function get()
    {
        $this->user_model->(2);
    }