code: public boolean isEmbedLinkUrlExpired(){
          Long urlCreationTime = getUrlCreationTime();
          if (urlCreationTime == null){
              return true;
          }
          return (System.currentTimeMillis() - urlCreationTime) < (60 * 1000);
      }
docs: Convenience method to check if 60 seconds has passed since the time this link was created.
  @return false if creation time is less than 60 seconds, true otherwise.