code: def create_placeholder(self, slot="blog_contents", role='m', title=None):
          
          return Placeholder.objects.create_for_object(self, slot, role=role, title=title)
docs: Create a placeholder on this blog entry.
  
          To fill the content items, use
          :func:`ContentItemModel.objects.create_for_placeholder() <fluent_contents.models.managers.ContentItemManager.create_for_placeholder>`.
  
          :rtype: :class:`~fluent_contents.models.Placeholder`