StringWriter writer = new StringWriter();
parser.printUsage(writer, null);
msg.append(writer.getBuffer());
msg.append("\n");
// print option sample. This is useful some time
msg.append(" Example: java -jar properties-compiler.jar").append(parser.printExample(REQUIRED));
msg.append("\n");
System.err.println(msg); // NOSONAR this is a commandline tool
return -1;
}