code: def register_gpu_op(name):
      """Add new GPU op name to the registry"""
      global _gpu_ops
      _gpu_ops = _gpu_ops.union({name})
  
file_path: DALI/dali/python/nvidia/dali/ops/_registry.py
imports: from nvidia.dali import backend
label_desc: Use image node_id 6 for calling a global function with example usage: register_gpu_op(name) without return types