code: def sync_counts(**kwargs):
      
      badges = kwargs.get('badges')
      excluded = kwargs.get('exclude_badges')
  
      instances = registry.get_recipe_instances(badges=badges, excluded=excluded)
      updated_badges, unchanged_badges = [], []
  
      for instance in instances:
          reset_queries()
          badge, updated = instance.update_badge_users_count()
          if updated:
              updated_badges.append(badge)
          else:
              unchanged_badges.append(badge)
          log_queries(instance)
  
      return (updated_badges, unchanged_badges)
docs: Iterates over registered recipes and denormalizes ``Badge.users.count()``
      into ``Badge.users_count`` field.