/**
* Return only available protection types.
*
* @see RublonRolesProtection::getProtectionTypes()
* @return array
*/
static function getAvailableProtectionTypes()
{
$types = RublonRolesProtection::getProtectionTypes();
foreach ($types as &$type) {
if (!self::isProtectionTypeAvailable($type)) {
$type = null;
}
}
return array_filter($types);
}
