response.setContentType("application/pdf");
response.setHeader("Content-disposition", "inline; filename=conversa_chat.pdf");
response.setHeader("Cache-Control", "no-cache");
response.setDateHeader("Expires", 0);
response.setHeader("Pragma", "No-cache");
converter.convertToPdf(new URL(urlContexto),
IHtmlToPdfTransformer.A4P,
headerFooterList,
response.getOutputStream(),
properties);
// out.flush();