docs: public boolean expire(final String identifier, final long timestamp,
        final String... attributes) {
      
      if (attributes == null || attributes.length == 0) {
        return this.wmi.expireId(identifier, timestamp);
      }
  
      boolean retVal = true;
      for (String attribute : attributes) {
        retVal = retVal && this.wmi.expireAttribute(identifier, attribute, timestamp);
      }
      return retVal;
    }