code: static <B extends ProcessBuilder> QueueBuilder<B> newQueueBuilder(Queue parent_queue, Class<B> process_builder_class)
      {
          return new QueueBuilder<B>(parent_queue, process_builder_class);
      }
docs: Retrieve a new QueueBuilder using the specified
  queue as a parent.
  
  @param parent_queue - The parent queue.
  @return The new QueueBuilder object.