public Object getRowKey() {

    if (index < 0 || index >= wrappedData.size()) {
      return null;
    }
    Job job = (Job) wrappedData.get(index);
    System.out.println("getRowKey() return: " + job.getJobId());
    return job.getJobId();
  }
 private int indexOf(Object rowKey) {
   int result = -1;
   for (Object obj : wrappedData) {
     result++;
     Job job = (Job) obj;
     if (rowKey.equals(job.getJobId())) {
       return result;
     }
   }
   return result;
 }