private function get(string $endpoint): array
    {
        return \GuzzleHttp\json_decode(
            $this->client
                ->get(
                    self::API_BASE_URI.$endpoint,
                    [
                        'query' => [
                            'client_id' => $this->apiKey,
                        ],
                    ]
                )
                ->getBody()
                ->getContents(),
            true
        );
    }