code: public Integer mapThrowable(final Throwable throwable) {
          Throwable throwableToCheck = throwable;
          int depthToGo = 20;
  
          while (true) {
              Integer resId = mapThrowableFlat(throwableToCheck);
              if (resId != null) {
                  return resId;
              } else {
                  throwableToCheck = throwableToCheck.getCause();
                  depthToGo--;
                  if (depthToGo <= 0 || throwableToCheck == throwable || throwableToCheck == null) {
                      Log.d("EventBus", "No specific message resource ID found for " + throwable);
                      // return config.defaultErrorMsgId;
                      return null;
                  }
              }
          }
  
      }
docs: Looks at the exception and its causes trying to find an ID.