docs: def force_recalculate(obj):
      ''' Recalculate all ImageCountField and UserImageCountField fields
          in object ``obj``. 
          
          This should be used if auto-updating of these fields was disabled for
          some reason.
          
          To disable auto-update when saving AttachedImage instance 
          (for example when you need to save a lot of images and want to 
          recalculate denormalised values only after all images are saved) use 
          this pattern::
          
              image = AttachedImage(...)
              image.send_signal = False
              image.save()
  
      '''        
      class Stub(object):
          content_object = obj    
      img = Stub()
      image_saved.send(sender = obj.__class__, instance = img)