Ensure that the handler is in the container before retrieving
Ensure that the handler is in the container before retrieving

RealSelf/Slim,juliangut/Slim,slimphp/Slim,Sam-Burns/Slim,feryardiant/slim,foxyantho/Slim,mnapoli/Slim,iinux/Slim,dopesong/Slim,iinux/Slim,akrabat/Slim,JoeBengalen/Slim,designermonkey/Slim,AndrewCarterUK/Slim,iinux/Slim