code: def render_placeholder_search_text(placeholder, fallback_language=None):
      
      parent_object = placeholder.parent   # this is a cached lookup thanks to PlaceholderFieldDescriptor
      language = get_parent_language_code(parent_object)
      output = SearchRenderingPipe(language).render_placeholder(
          placeholder=placeholder,
          parent_object=parent_object,
          fallback_language=fallback_language
      )
      return output.html
docs: Render a :class:`~fluent_contents.models.Placeholder` object to search text.
      This text can be used by an indexer (e.g. haystack) to produce content search for a parent object.
  
      :param placeholder: The placeholder object.
      :type placeholder: :class:`~fluent_contents.models.Placeholder`
      :param fallback_language: The fallback language to use if there are no items in the current language.
                                Passing ``True`` uses the default :ref:`FLUENT_CONTENTS_DEFAULT_LANGUAGE_CODE`.
      :type fallback_language: bool|str
      :rtype: str