protected function getFilteredPermissions()
    {
        $permissions = BackendAuth::listTabbedPermissions();

        if ($this->user->isSuperUser()) {
            return $permissions;
        }

        foreach ($permissions as $tab => $permissionsArray) {
            foreach ($permissionsArray as $index => $permission) {
                if (!$this->user->hasAccess($permission->code)) {
                    unset($permissionsArray[$index]);
                }
            }

            if (empty($permissionsArray)) {
                unset($permissions[$tab]);
            }
            else {
                $permissions[$tab] = $permissionsArray;
            }
        }

        return $permissions;
    }