code: def simple_method(self, a: int, *, b: int, c: int = 1) -> None:
      pass
  
file_path: optuna/tests/test_convert_positional_args.py
imports: import re
  from typing import List
  import pytest
  from optuna._convert_positional_args import convert_positional_args
label_desc: Use image node_id 1 for calling the _SimpleClass obj's underlying member method code with example usage: obj.simple_method(a) without return types