code: def get_session_storage(self, session_id="session"):
      return self.driver.execute_script(
          f"return JSON.parse(window.sessionStorage.getItem('{session_id}'));"
      )
  
file_path: dash/dash/testing/dash_page.py
imports: from bs4 import BeautifulSoup
label_desc: Use image node_id 12 for calling the DashPageMixin obj's underlying member method code with example usage: obj.get_session_storage(session_id) and returns: self