docstr: Validates the supplied state_dict and populates the current
  Privacy Accountant's state dict.
  
  Args:
      state_dict: state_dict to load.
  
  Raises:
      ValueError if supplied state_dict is invalid and cannot be loaded.
docstr_tok: ["Validates","the","supplied","state_dict","and","populates","the","current","Privacy","Accountant","'s","state","dict",".","Args",":","state_dict",":","state_dict","to","load",".","Raises",":","ValueError","if","supplied","state_dict","is","invalid","and","can","not","be","loaded","."]
code: def load_state_dict(self, state_dict: T_state_dict):
      """
      Validates the supplied state_dict and populates the current
      Privacy Accountant's state dict.
  
      Args:
          state_dict: state_dict to load.
  
      Raises:
          ValueError if supplied state_dict is invalid and cannot be loaded.
      """
      if state_dict is None or len(state_dict) == 0:
          raise ValueError(
              "state dict is either None or empty and hence cannot be loaded"
              " into Privacy Accountant."
          )
      if "history" not in state_dict.keys():
          raise ValueError(
              "state_dict does not have the key `history`."
              " Cannot be loaded into Privacy Accountant."
          )
      if "mechanism" not in state_dict.keys():
          raise ValueError(
              "state_dict does not have the key `mechanism`."
              " Cannot be loaded into Privacy Accountant."
          )
      if self.__class__.mechanism != state_dict["mechanism"]:
          raise ValueError(
              f"state_dict of {state_dict['mechanism']} cannot be loaded into "
              f" Privacy Accountant with mechanism {self.__class__.mechanism}"
          )
      self.history = state_dict["history"]
  
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 8 for calling the IAccountant obj's underlying member method code with example usage: obj.load_state_dict(state_dict) without return types