code: def update_hostname(self, prompt):
          
          result = re.search(self.prompt_re, prompt)
          if result:
              hostname = result.group('hostname')
              self.log("Hostname detected: {}".format(hostname))
          else:
              hostname = self.device.hostname
              self.log("Hostname not set: {}".format(prompt))
          return hostname
docs: Update the hostname based on the prompt analysis.