code: String formatMessage(int msgLogLevel, String tag, String msg, Throwable exception) {
          if (exception != null) {
              return DateHelper.getUTC(System.currentTimeMillis()) + "/" + getLevelTag(msgLogLevel) + tag + ": " + msg + "\n" + getStackTrace(exception) + "\n";
          } else {
              return DateHelper.getUTC(System.currentTimeMillis()) + "/" + getLevelTag(msgLogLevel) + tag + ": " + msg + "\n";
          }
      }
docs: Format log data into a log entry String.
  
  @param msgLogLevel Log level of an entry.
  @param tag         Tag with SDK and version details.
  @param msg         Log message.
  @param exception   Exception with a stach
  @return Formatted log entry.