docs: protected void rrdToolUpdate(String template, String data) throws Exception {
  		List<String> commands = new ArrayList<>();
  		commands.add(binaryPath + "/rrdtool");
  		commands.add("update");
  		commands.add(outputFile.getCanonicalPath());
  		commands.add("-t");
  		commands.add(template);
  		commands.add("N:" + data);
  
  		ProcessBuilder pb = new ProcessBuilder(commands);
  		Process process = pb.start();
  		checkErrorStream(process);
  	}