sS postPageWithHeaders(S url, L headers, O... postData) {
  temp tempSetTL(doPost_extraHeaders, litmap(asObjectArray(headers)));
  ret postPage(url, postData);
}

sS postPageWithHeaders(S url, SS headers, O... postData) {
  temp tempSetTL(doPost_extraHeaders, headers);
  ret postPage(url, postData);
}