PHP: scope resolution not working for static anon functions

class Father {
  static function hi() {
    echo "Father" . PHP_EOL;
  }
}

class Guy extends Father {

  static function hi() {
    echo "Guy" . PHP_EOL;
  }

  static function test() {
    echo self::class;
    self::hi();
    echo static::class;
    static::hi();
    echo parent::class;
    parent::hi();
    $anon = function() {
      self::hi();
      echo self::class;
      echo static::class;
      static::hi();
      echo parent::class;
      parent::hi();
    };
    $anon();
  }

}

class Child extends Guy {
  static function hi() {
    echo "Child" . PHP_EOL;
  }
}

Child::test();