code: public HttpResponse doHttpCall(final String urlString,
  			final String stringToSend) throws IOException {
  		return this.doHttpCall(urlString, stringToSend, "", "", "", 0,
  				Collections.<String, String> emptyMap());
  	}
docs: Sends a string to a URL. This is very helpful when SOAP web services are
  involved or you just want to post a XML message to a URL.
  
  @param urlString
  the URL to post to
  @param stringToSend
  the string that will be post to the URL
  @return a {@link HttpResponse} object containing the response code and
  the response string
  @throws IOException
  if a I/O error occurs