code: def set_func_name(func_name):
      """Set the name of Chainer function being converted.
  
      Args:
          func_name (str): The name of Chainer function.
      """
      global __func_name
      __func_name = func_name
  
file_path: chainer/onnx_chainer/onnx_helper.py
imports: import onnx
label_desc: Use image node_id 1 for calling a global function with example usage: set_func_name(func_name) without return types