code: def current_step(self) -> int:
      return self._current_step
  
file_path: optuna/benchmarks/naslib/problem.py
imports: from __future__ import annotations
  import sys
  from typing import Any
  from kurobako import problem
  from naslib.utils import get_dataset_api
label_desc: Use image node_id 2 for calling the NASLibEvaluator obj's underlying member method code with example usage: obj.current_step() and returns: self