Mark parent card complete when child cards under given list

gistfile1.txt

function markParentCardCompleteWhenChildCardsUnderGivenList(notification)
{
  var complete = true;
  var parent = new Notification(notification)
  .movedCard("Completed List")
  .cardsLinkedInAttachments()
  .first();
  
  parent.cardsLinkedInAttachments().each(function(card)
  {
    if(card.currentList().name() != "Completed List")
      complete = false;
  });
  
  if(complete)
    parent.markDueDateComplete();
}