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@ 2014-05-13T19:17:50Z

<?hh

interface Foo {
    public function foo(string $foo) : string;
}

class Bar implements Foo {
    public function foo(string $foo) {
        return new string;
    }
}

$b = new Bar;
$c = $b->foo("test");
var_dump($c);

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This is an error 404