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<?php interface Creator { public function creator(): void; } class EchoCreator implements Creator { public function creator(): void { echo 'Hello world!'; } } trait CreatorAble { abstract protected function creator(): Creator; public function useCreator(): void { $this->creator()->create(); } } final class SomeClass { private $creator; use CreatorAble; public function __construct(Creator $creator) { $this->creator = $creator; } private function creator(): Creator { return $this->creator; } } (new SomeClass(new EchoCreator))->useCreator();
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Call to undefined method EchoCreator::create() in /in/YesW7:23 Stack trace: #0 /in/YesW7(46): SomeClass->useCreator() #1 {main} thrown in /in/YesW7 on line 23
Process exited with code 255.

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