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<?hh class Foo<Tk,Tv> extends Map<Tk, Tv> { } function test(Map<string, Map<string, string>> $param): void { $var = $param->get("key") != null ? $param->get("key") : Map {}; $var->get("key"); }
Output for git.master, git.master_jit, rfc.property-hooks
<?hh class Foo<Tk,Tv> extends Map<Tk, Tv> { } function test(Map<string, Map<string, string>> $param): void { $var = $param->get("key") != null ? $param->get("key") : Map {}; $var->get("key"); }

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