class_docstr: Serializes a list of JSON objects into a JSONL string
code: def serialize(self, data):
      lines = [json.dumps(item) for item in data]
      return "\n".join(lines)
  
file_path: axolotl/src/axolotl/convert.py
imports: import json
  import sys
label_desc: Use image node_id 1 for calling the JsonlSerializer obj's underlying member method code with example usage: obj.serialize(data) and returns: str