docs: def _get_standalone_app_url(self, app_id, spark_master_address, requests_config, tags):
          """
          Return the application URL from the app info page on the Spark master.
          Due to a bug, we need to parse the HTML manually because we cannot
          fetch JSON data from HTTP interface.
          """
          app_page = self._rest_request(
              spark_master_address,
              SPARK_MASTER_APP_PATH,
              SPARK_STANDALONE_SERVICE_CHECK,
              requests_config,
              tags,
              appId=app_id,
          )
  
          dom = BeautifulSoup(app_page.text, 'html.parser')
          app_detail_ui_links = dom.find_all('a', string='Application Detail UI')
  
          if app_detail_ui_links and len(app_detail_ui_links) == 1:
              return app_detail_ui_links[0].attrs['href']