code: def start(tag):
      """add new node to profiling data"""
      ctx.profiling["level"] += 1
      if profiling_enabled() is True:
          start_node(tag)
  
imports: import time
  from datetime import datetime, timezone
  from functools import wraps
  import mindsdb.utilities.hooks
  from mindsdb.utilities.config import Config
  from mindsdb.utilities.context import context
label_desc: Use image node_id 9 for calling a global function with example usage: start(tag) without return types