Ok, that's what I thought but this "scoping trick" won't work for PHP 5.4 and above. So `function($object, $method) {return is_callable(array($object, $method));}` and `is_callable(array($object, $method));` will returns the same result. If you want to take this specific case into account, better to not extends `Inspector` from `\lithium\core\StaticObject`. Like for the `Debugger` class extending `\lithium\core\StaticObject` is not needed imo.