code: def has_worker_context():
      """Returns whether a worker context has been entered."""
      return dc_context.get_current_worker_context() is not None
  
file_path: tensorflow-upstream/tensorflow/python/distribute/multi_worker_util.py
imports: from tensorflow.core.protobuf import cluster_pb2
  from tensorflow.python.distribute import distribute_coordinator_context
  from tensorflow.python.training import server_lib
label_desc: Use image node_id 12 for calling a global function with example usage: has_worker_context() and returns: unknown