code: def bakery_client_for_controller(self, controller_name):
          '''Make a copy of the bakery client with a the appropriate controller's
          cookiejar in it.
          '''
          bakery_client = self.bakery_client
          if bakery_client:
              bakery_client = copy.copy(bakery_client)
          else:
              bakery_client = httpbakery.Client()
          bakery_client.cookies = self.jujudata.cookies_for_controller(
              controller_name)
          return bakery_clienf bakery_client_for_controller(self, controller_name):
          '''Make a copy of the bakery client with a the appropriate controller's
          cookiejar in it.
          '''
          bakery_client = self.bakery_client
          if bakery_client:
              bakery_client = copy.copy(bakery_client)
          else:
              bakery_client = httpbakery.Client()
          bakery_client.cookies = self.jujudata.cookies_for_controller(
              controller_name)
          return bakery_client
docs: Make a copy of the bakery client with a the appropriate controller's
          cookiejar in it.