docs: def post(self, request, *args, **kwargs):
          """
          Method for handling POST requests.
          Checks for a modify confirmation and performs
          the action by calling `process_action`.
  
          """
          queryset = self.get_selected(request)
  
          if request.POST.get('modify'):
              response = self.process_action(request, queryset)
              if not response:
                  url = self.get_done_url()
                  return self.render(request, redirect_url=url)
              else:
                  return response
          else:
              return self.render(request, redirect_url=request.build_absolute_uri())