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<?php interface Repository { public function setAccessLevel(); } interface ContactRepository extends Repository {} abstract class ElasticSearchRepository implements Repository { public function setAccessLevel() : ElasticSearchRepository { return $this; } } abstract class DatabaseRepository implements Repository { public function setAccessLevel() : DatabaseRepository { return $this; } } class ContactESRepository extends ElasticSearchRepository implements ContactRepository { public function setAccessLevel() : ContactRepository { return new class extends ContactESRepository {}; } } $cesr = new ContactESRepository(); $cesr->setAccessLevel();
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Declaration of ContactESRepository::setAccessLevel(): ContactRepository must be compatible with ElasticSearchRepository::setAccessLevel(): ElasticSearchRepository in /in/QufgA on line 21
Process exited with code 255.

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