public function index($page = null)
    {
        $url = sprintf('buckets/%d/webhooks.json', $this->bucket);

        $webhooks = $this->client->get($url, [
            'query' => [
                'page' => $page,
            ]
        ]);

        return $this->indexResponse($webhooks, Webhook::class)->map(function ($webhook) {
            $webhook->inContext($this->bucket);
            return $webhook;
        });
    }