code: def get_frontend_data_dict_for_cms_page(cms_page, cms_page_title, request, editable=False):
      
      placeholders = list(cms_page.placeholders.all())
      placeholder_frontend_data_dict = get_frontend_data_dict_for_placeholders(
          placeholders=placeholders,
          request=request,
          editable=editable
      )
      global_placeholder_data_dict = get_global_placeholder_data(placeholder_frontend_data_dict)
      data = {
          'containers': placeholder_frontend_data_dict,
          'meta': {
              'title': cms_page_title.page_title if cms_page_title.page_title else cms_page_title.title,
              'description': cms_page_title.meta_description or '',
          }
      }
  
      language_links = get_language_links(cms_page=cms_page, request=request)
      if language_links:
          data['meta']['languages'] = language_links
  
      if placeholder_frontend_data_dict:
          data['containers'] = placeholder_frontend_data_dict
  
      if global_placeholder_data_dict:
          data['global_placeholder_data'] = global_placeholder_data_dict
  
      post_processer = settings.DJANGOCMS_SPA_CMS_PAGE_DATA_POST_PROCESSOR
      if post_processer:
          func = get_function_by_path(post_processer)
          data = func(cms_page=cms_page, data=data, request=request)
  
      return data
docs: Returns the data dictionary of a CMS page that is used by the frontend.