code: def service_messages(self, short_name):
          
  
          if short_name not in self.services:
              raise ArgumentError("Unknown service name", short_name=short_name)
  
          return list(self.services[short_name]['state'].messages)
docs: Get the messages stored for a service.
  
          Args:
              short_name (string): The short name of the service to get messages for
  
          Returns:
              list(ServiceMessage): A list of the ServiceMessages stored for this service