class Main
{
    public static function main()
    {
        var a = new Test();
        var b = new Test();
        b.test();//works as expected :Cannot access to private field test

        a.check(b);
    }
}
class Test
{
    public function new()
    {
    }
    public function check(b:Test):Void
    {
        b.test();//does NOT work as expected: b suddenly has access to private field test
    }
    private function test():Void
    {
        trace("hello");
    }
}