private boolean retryDelayHasPassedBy(Long lastFailTime){
  return lastFailTime == null || lastFailTime + this.retryAfterMs < System.currentTimeMillis();
}

private boolean retryDelayHasPassedBy ( Long lastFailTime ) { return lastFailTime == null || lastFailTime + this . retryAfterMs < System . currentTimeMillis ( ) ; }
checks if the retry delay has passed .
