code: def _prepare_blob_copy_op(from_name, to_name):
      copy_op_def = caffe2_pb2.OperatorDef()
      copy_op_def.type = "Copy"
      copy_op_def.input.extend([from_name])
      copy_op_def.output.extend([to_name])
      return copy_op_def
  
file_path: pytorch/caffe2/python/control_ops_grad.py
imports: from caffe2.proto import caffe2_pb2
label_desc: Use image node_id 12 for calling a global function with example usage: _prepare_blob_copy_op(from_name, to_name) and returns: copy_op_def