code: private boolean isCopyModel(I_CmsDraggable draggable) {
  
          if (!(draggable instanceof CmsResultListItem)) {
              return false;
          }
          return ((CmsResultListItem)draggable).getResult().isCopyModel();
      }
docs: Checks if the draggable item is a copy model.<p>
  
  @param draggable the draggable item
  
  @return true if the item is a copy model