docs: protected void addCommandLineArg(PropertiesProxy conf, final String key, String value) {
      	int index = key.indexOf('=');
      	String _key = key;
      	if (index > 0) {
      		_key = key.substring(0, index);
      		if (index == key.length() - 1) {
      			value = "";
      		}
      		else {
      			value = key.substring(index + 1);
      		}
      	}
      	if (value == null)
      		value = "true";
      	conf.put(_key.trim().intern(), value.trim().intern());
      }