code: def is_structured(line):
      line = to_bytes(line)
      return line.startswith(b"[MFLOG|") or line.startswith(
          b"[![MFLOG|"
      )
  
file_path: metaflow/metaflow/mflog/mflog.py
imports: import heapq
  import re
  import time
  import uuid
  from datetime import datetime
  from collections import namedtuple
  from metaflow.util import to_bytes, to_fileobj, to_unicode
label_desc: Use image node_id 2 for calling a global function with example usage: is_structured(line) and returns: unknown