private static extern CURLcode curl_easy_setopt(IntPtr pCurl, CURLoption opt, _GenericCallbackDelegate callback);
private static extern CURLcode curl_easy_setopt(IntPtr pCurl, CURLoption opt, _GenericCallbackDelegate callback);
private static extern CURLcode curl_easy_setopt(IntPtr pCurl, CURLoption opt, _GenericCallbackDelegate callback);
private static extern CURLcode curl_easy_setopt(IntPtr pCurl, CURLoption opt, _GenericCallbackDelegate callback);