docs: public HttpResponse doHttpCall(final String urlString,
  			final File fileToBeSent, final String proxyHost,
  			final int proxyPort, final String fileEncoding) throws IOException {
  		return this.doHttpCall(urlString,
  				fileUtil.getFileContentsAsString(fileToBeSent, fileEncoding),
  				"", "", proxyHost, 0, Collections.<String, String> emptyMap());
  	}