old_contents: from __future__ import absolute_import, unicode_literals
  
  from ds.models import App
  
  from .base import Serializer
  from .manager import add
  
  
  @add(App)
  class AppSerializer(Serializer):
      def serialize(self, item, attrs):
          return {
              'id': str(item.id),
              'name': item.name,
              'provider': item.provider,
              'provider_config': item.provider_config,
          }
  
new_contents: from __future__ import absolute_import, unicode_literals
  
  from ds.models import App
  
  from .base import Serializer
  from .manager import add
  
  
  @add(App)
  class AppSerializer(Serializer):
      def serialize(self, item, attrs):
          return {
              'id': str(item.id),
              'name': item.name,
              'provider': item.provider,
              'provider_config': item.provider_config,
              'notifiers': item.notifiers,
          }
  
subject: Add notifiers to app serialization