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<?php interface Foo { public function bar(?object $bar = null): void; } class FooBar implements Foo { public function bar(object $bar = null): void { } } $fooBar = new FooBar(); $fooBar->bar();
Output for git.master, git.master_jit
Deprecated: FooBar::bar(): Implicitly marking parameter $bar as nullable is deprecated, the explicit nullable type must be used instead in /in/hKpEZ on line 10

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