code: def _function_proto(self):  # type: ignore
      func_proto = FunctionProto()
      func_proto.ParseFromString(
          self._function_body
      )  # pylint: disable=protected-access
      return func_proto
  
imports: from typing import List
  from onnx.onnx_cpp2py_export import defs
  from onnx import AttributeProto, FunctionProto
label_desc: Use image node_id 2 for calling a global function with example usage: _function_proto() and returns: func_proto