code: def render_placeholder(request, placeholder, parent_object=None, template_name=None, cachable=None, limit_parent_language=True, fallback_language=None):
      
      output = PlaceholderRenderingPipe(request).render_placeholder(
          placeholder=placeholder,
          parent_object=parent_object,
          template_name=template_name,
          cachable=cachable,
          limit_parent_language=limit_parent_language,
          fallback_language=fallback_language
      )
  
      # Wrap the result after it's stored in the cache.
      if markers.is_edit_mode(request):
          output.html = markers.wrap_placeholder_output(output.html, placeholder)
  
      return output
docs: Render a :class:`~fluent_contents.models.Placeholder` object.
      Returns a :class:`~fluent_contents.models.ContentItemOutput` object
      which contains the HTML output and :class:`~django.forms.Media` object.
  
      This function also caches the complete output of the placeholder
      when all individual items are cacheable.
  
      :param request: The current request object.
      :type request: :class:`~django.http.HttpRequest`
      :param placeholder: The placeholder object.
      :type placeholder: :class:`~fluent_contents.models.Placeholder`
      :param parent_object: Optional, the parent object of the placeholder (already implied by the placeholder)
      :param template_name: Optional template name used to concatenate the placeholder output.
      :type template_name: str | None
      :param cachable: Whether the output is cachable, otherwise the full output will not be cached.
                       Default: False when using a template, True otherwise.
      :type cachable: bool | None
      :param limit_parent_language: Whether the items should be limited to the parent language.
      :type limit_parent_language: bool
      :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: :class:`~fluent_contents.models.ContentItemOutput`