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<?php class Foo { public function baz(?Foo $foo = NULL) { } } class Bar extends Foo { public function baz(Foo $foo = NULL) { } }
Output for git.master_jit, git.master
Deprecated: Bar::baz(): Implicitly marking parameter $foo as nullable is deprecated, the explicit nullable type must be used instead in /in/Shl6Y on line 13

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