code: private String createMessage(String... args) {
  
      StringBuilder buffer = new StringBuilder();
      for (String s : args) {
        if (buffer.length() > 0) {
          buffer.append(';');
        }
        buffer.append(s);
      }
      return buffer.toString();
    }
docs: Returns a {@link String} representing the log message, which contains the given arguments separated by ';'
  
  @param args - the arguments for the log message
  @return a {@link String} representing the log message