zUnion example

        return ($this->lazyObjectState->realInstance ??= ($this->lazyObjectState->initializer)())->zReverseRange(...\func_get_args());
    }

    public function zSize($key)
    {
        return ($this->lazyObjectState->realInstance ??= ($this->lazyObjectState->initializer)())->zSize(...\func_get_args());
    }

    public function zUnion($key, $keys, $weights = null, $aggregate = null)
    {
        return ($this->lazyObjectState->realInstance ??= ($this->lazyObjectState->initializer)())->zUnion(...\func_get_args());
    }
}