zendframework/zf2#6785 - using `is_subclass_of()` instead of protected static method usage
zendframework/zf2#6785 - using `is_subclass_of()` instead of protected static method usage

See bug https://bugs.php.net/bug.php?id=53727
See bug https://github.com/zendframework/zf2/pull/1807

Deprecating protected static polyfill method `isSubclassOf`

Maks3w/zend-di,zendframework/zend-di,tux-rampage/zend-di,MadCat34/zend-di