billable->request('POST', 'v1/subscriptions', $attributes))) ->setBillable($this->billable); } /** * {@inheritDoc} */ public function find(string $id): ?Subscription { $result = $this->billable->request('GET', sprintf('v1/subscriptions/%s', $id)); return $result->success() ? (new Subscription($result)) ->setBillable($this->billable) : null; } }