code: def under_ci() -> bool:
      """:return: True if we run in Jenkins."""
      return "JOB_NAME" in os.environ
  
file_path: mxnet/ci/util.py
imports: import contextlib
  import logging
  import logging.config
  import os
  import subprocess
  import sys
  import requests
label_desc: Use image node_id 4 for calling a global function with example usage: under_ci() and returns: unknown