def __str__(self) -> str:
    if (self.render_result is None):
        if (kls is set):
            return str(set(self))
        return cast(str, kls.__str__(self))
    return self.render_result
def __str__(self) -> str:
    if (self.render_result is None):
        if (kls is set):
            return str(set(self))
        return cast(str, kls.__str__(self))
    return self.render_result