old_contents: from django.apps import AppConfig
  
  
  class HPSearchrConfig(AppConfig):
      name = 'hpsearch'
      verbose_name = 'HP Search'
  
      def ready(self):
          from hpsearch.signals import new_experiment_group_iteration  # noqa
  
new_contents: from django.apps import AppConfig
  
  
  class HPSearchConfig(AppConfig):
      name = 'hpsearch'
      verbose_name = 'HP Search'
  
      def ready(self):
          from hpsearch.signals import new_experiment_group_iteration  # noqa
  
subject: Update apps signals register