code: def check_optimized_build():
      if not ray._raylet.OPTIMIZED:
          msg = (
              "WARNING: Unoptimized build! "
              "To benchmark an optimized build, try:\n"
              "\tbazel build -c opt //:ray_pkg\n"
              "You can also make this permanent by adding\n"
              "\tbuild --compilation_mode=opt\n"
              "to your user-wide ~/.bazelrc file. "
              "(Do not add this to the project-level .bazelrc file.)"
          )
          logger.warning(msg)
  
imports: import asyncio
  import logging
  from ray._private.ray_microbenchmark_helpers import timeit
  from ray._private.ray_client_microbenchmark import main
  import numpy
  import multiprocessing
  import ray
  import ray.experimental.channel
  from ray.dag import InputNode, MultiOutputNode
label_desc: Use image node_id 4 for calling a global function with example usage: check_optimized_build() without return types