protected virtual async Task <string> GetMetadata(CookieContainer cc, string url, string data)
 {
     return(await _server.PostAsync(new HttpOptions
     {
         Url = url,
         Cc = cc,
         UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.120 Safari/537.36",
     }, new StringContent(data, Encoding.UTF8, "application/x-www-form-urlencoded")));
 }
 protected virtual async Task <string> GetMetadata(CookieContainer cc, string url, string payload)
 {
     return(await _server.PostAsync(new HttpOptions { Url = url, Cc = cc }, new StringContent(payload, Encoding.UTF8, "application/json")));
 }