public function getStaffModel($addLogin = true)
    {
        $model = $this->_loadClass('StaffModel', true);

        if ($addLogin) {
            $this->addUserLogin($model, 'gsf_login', 'gsf_id_organization');
        }
        $this->setAsGemsUserId($model, 'gsf_id_user');

        return $model;
    }