code: def pusher_connected(self, data):
          
          # Inform user that pusher is done connecting
          self.logger.info("Pusherclient connected")
  
          # Bind the events we want to listen to
          self.callback_client.bind("payment_authorized",
                                    self.payment_authorized)
          self.callback_client.bind("shortlink_scanned",
                                    self.shortlink_scanned)
docs: Called when the pusherclient is connected