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<?php interface MyObjectInterface {} class MyObject implements MyObjectInterface {} class MyBaseClass { public function bar(MyObjectInterface $object): MyObjectInterface { return $object; } } interface YourObjectInterface extends MyObjectInterface {} class YourObject extends MyObject implements YourObjectInterface {} class YourSubclass extends MyBaseClass { public function bar(MyObjectInterface $object): MyObjectInterface { return $object; } } $subclass = new YourSubclass(); $object = new YourObject(); $subclass->bar($object);
Output for rfc.property-hooks, git.master_jit, git.master

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