code: def get_func_name():
      """Return processing function name"""
      assert __func_name is not None
      return __func_name
  
file_path: chainer/onnx_chainer/onnx_helper.py
imports: import onnx
label_desc: Use image node_id 2 for calling a global function with example usage: get_func_name() and returns: __func_name