code: @Override
  	public AppEngineGetList<E> sort(Order<?, ?>... orders) {
  		if (orders == null) {
  			throw new IllegalArgumentException("'orders' must not be [" + orders + "]");
  		}
  		
  		this.orders = Arrays.asList(orders);
  		return this;
  	}
docs: Specifies sort orders by which the returned list is sorted.
  
  @param orders The sort orders which the returned list is sorted by.
  @return The {@code GetList} which the execution result is sorted
  by the specified sort orders.