Transition question concerning atk4-login

I’ve started transition from 2.05 to 2.2. Question concerning the atk4-login module: How do I convert this?

$this->auth = $this->add(new \atk4\login\Auth([
    'fieldLogin' => 'user_Username',
    'fieldPassword' => 'user_Password',
    'hasUserMenu' => false,
    'hasPreferences' => false
  ]));

I’ve tried

 $this->auth = \atk4\login\Auth::addTo($this);

which results in an error "Call to undefined method atk4\login\Auth::addTo() "