code: def link_page_is_suitable_for_display(
          self, request=None, current_site=None, menu_instance=None,
          original_menu_tag=''
      ):
          
          if self.link_page:
              if(
                  not self.link_page.show_in_menus or
                  not self.link_page.live or
                  self.link_page.expired
              ):
                  return False
          return True
docs: Like menu items, link pages linking to pages should only be included
          in menus when the target page is live and is itself configured to
          appear in menus. Returns a boolean indicating as much