docstr: Signal one optimization step
  
  Args:
      noise_multiplier: Current noise multiplier
      sample_rate: Current sample rate
docstr_tok: ["Signal","one","optimization","step","Args",":","noise_multiplier",":","Current","noise","multiplier","sample_rate",":","Current","sample","rate"]
code: def step(self, *, noise_multiplier: float, sample_rate: float):
      """
      Signal one optimization step
  
      Args:
          noise_multiplier: Current noise multiplier
          sample_rate: Current sample rate
      """
      pass
  
file_path: opacus/opacus/accountants/accountant.py
imports: import abc
  from collections import OrderedDict
  from copy import deepcopy
  from typing import Any, Callable, Mapping, TypeVar
  from opacus.optimizers import DPOptimizer
label_desc: Use image node_id 2 for calling the IAccountant obj's underlying member method code with example usage: obj.step() without return types