code: def switch_to_window(page_class, webdriver):
          
          window_list = list(webdriver.window_handles)
          original_window = webdriver.current_window_handle
          for window_handle in window_list:
              webdriver.switch_to_window(window_handle)
              try:
                  return PageFactory.create_page(page_class, webdriver)
              except:
                  pass
  
          webdriver.switch_to_window(original_window)
          raise WindowNotFoundError(
              u("Window {0} not found.").format(page_class.__class__.__name__))
docs: Utility method for switching between windows.  It will search through currently open 
          windows, then switch to the window matching the provided PageObject class.
  
          Args:
              page_class (PageObject): Page class to search for/instantiate.
              webdriver (WebDriver): Selenium webdriver.
  
          Usage::
  
              WebUtils.switch_to_window(DetailsPopUpPage, driver) # switches to the pop up window.