code: public static int wtf(String tag, Throwable tr) {
          return wtf(LOG_ID_MAIN, tag, tr.getMessage(), tr, false);
      }
docs: What a Terrible Failure: Report an exception that should never happen.
  Similar to {@link #wtf(String, String)}, with an exception to log.
  @param tag Used to identify the source of a log message.
  @param tr An exception to log.