private static HttpClient CreateHttpClient(IAirlyClientConfig config)
        {
            var client = new HttpClient();

            client.BaseAddress = new Uri(HttpUrlBuilder.GetBaseUrl(config.IsSecure, config.HostAddress, config.ApiPrefix, config.ApiVersion));

            client.DefaultRequestHeaders.Add("Accept", "application/json");
            client.DefaultRequestHeaders.Add("Accept-Encoding", "gzip");
            client.DefaultRequestHeaders.Add("apikey", config.ApiKey);

            return(client);
        }