class_docstr: A message generated by an operator executed as a generator.
code: def to_json_line(self):
      return json.dumps(self.to_json()) + "\n"
  
file_path: fiftyone/fiftyone/operators/message.py
imports: from enum import Enum
  import json
label_desc: Use image node_id 3 for calling the GeneratedMessage obj's underlying member method code with example usage: obj.to_json_line() and returns: unknown