UserModel::getPermissionMulti

public function getPermissionMulti(string $permissionId): ?array
{
	if ($this->isAdmin())
	{
		return [PermissionDictionary::VALUE_VARIATION_ALL];
	}

	$permissions = $this->getPermissions();
	$permissions[$permissionId] = $permissions[$permissionId] ?? null;

	return is_array($permissions[$permissionId]) ? $permissions[$permissionId] : null;
}