Got these WARNINGS how can I resolve it ?
"include_once" statement detected. File manipulations are discouraged. Concatenating is forbidden.
"require_once" statement detected. File manipulations are discouraged. Concatenating is forbidden.
Code
include_once BP.DS.'app'.DS.'code'.DS.'core'.DS.'Mage'.DS.'Catalog'.DS.'Model'.DS.'Resource'.DS.'Attribute.php';