old_contents: from __future__ import absolute_import, unicode_literals
  
  from wagtail.wagtailcore.models import Page
  
  from wagtail_personalisation.models import PersonalisablePageMixin
  
  
  class HomePage(PersonalisablePageMixin, Page):
      pass
  
new_contents: from __future__ import absolute_import, unicode_literals
  
  from wagtail.wagtailcore.models import Page
  
  from wagtail_personalisation.models import PersonalisablePageMixin
  
  
  class HomePage(Page, PersonalisablePageMixin):
      pass
  
subject: Switch mixin ordering