Unexpected if clause in ResourceController

[Wilt]

In line https://github.com/phly/PhlyRestfully/blob/master/src/PhlyRestfully/ResourceController.php#L606 there is an unexpected if clause checking $id and isMethodAllowedForCollection. PUT methods with an $id are mapped to this update method and it is never used for updating collections...
All PUT methods without $id will map to replaceList according to https://github.com/zendframework/zf2/blob/master/library/Zend/Mvc/Controller/AbstractRestfulController.php#L417
I don't understand the reason for this if clause.