code: def _walk_operations(op, k):
      k -= 1
      if k < 0:
          return k
      for region in op.regions:
          for block in region:
              for child_op in block:
                  k = _walk_operations(child_op, k)
                  if k < 0:
                      return k
      return k
  
imports: from __future__ import annotations
  from collections.abc import Sequence
  import time
  from typing import Any
  import logging
  import warnings
  import numpy
  from jax._src import lib
  from jax._src import distributed
  from jax._src import compilation_cache
  from jax._src import config
  from jax._src.xla_bridge import process_count
  from jax._src import monitoring
  from jax._src import profiler
  from jax._src import traceback_util
  from jax._src.interpreters import mlir
  from jax._src.lib import xla_extension_version
  from jax._src.lib.mlir import ir
  from jax._src.lib import xla_client
label_desc: Use image node_id 2 for calling a global function with example usage: _walk_operations(op, k) and returns: k, k, k