docs: def scene_config(frames):
          """parse a scene.config message"""
          # "scene.config" <scene_id> <config>
          reader = MessageReader(frames)
          results = reader.string("command").uint32("scene_id").string("config").assert_end().get()
          if results.command != "scene.config":
              raise MessageParserError("Command is not 'scene.config'")
          return (results.scene_id, results.config)