def get_extra_inlines(self):
        return [self.placeholder_inline] + get_content_item_inlines(plugins=self.get_all_allowed_plugins())
Return the extra inlines for the placeholder editor.
dataset/ETHPy150Open edoburu/django-fluent-contents/fluent_contents/admin/placeholdereditor.py/PlaceholderEditorAdmin.get_extra_inlines