private boolean post(String url, String data) {
Client http = new Client();
_log.info("PowerMeterActions::post( " + url + ", ... )");
http.addHeader("Authorization", "AuthSub token=\"" + _authToken + "\"");
http.setContentType("application/atom+xml");
_log.trace("POSTing data: " + data);
Document res = http.postToXML(url, data);