code: def handle_submit(self):
          
          form = self.request.form
          # Selected AR UIDs
          uids = form.get("uids")
          container_mapping = self.get_container_mapping()
          for uid in uids:
              src_pos = container_mapping[uid]
              self.context.addDuplicateAnalyses(src_pos)
          redirect_url = "{}/{}".format(
              api.get_url(self.context), "manage_results")
          self.request.response.redirect(redirect_url)
docs: Handle form submission