code: def sync():
      """No-op. Used to synchronize the contents of the Python registry with C++."""
  
imports: import threading
  from tensorflow.core.framework import op_def_pb2
  from tensorflow.python import pywrap_tensorflow
  from tensorflow.python.framework import _op_def_registry
label_desc: Use image node_id 2 for calling a global function with example usage: sync() without return types