docstr: A method to be implemented by child class that will reset
  the server state.
docstr_tok: ["A","method","to","be","implemented","by","child","class","that","will","reset","the","server","state","."]
code: def reset_state():
      r"""
      A method to be implemented by child class that will reset
      the server state.
      """
      return
  
imports: import functools
  import threading
  import time
  from abc import ABC, abstractmethod
  import torch
  import torch.distributed.rpc
  from metrics.MetricsLogger import MetricsLogger
  from utils import sparse_rpc_format_to_tensor, sparse_tensor_to_rpc_format
label_desc: Use image node_id 4 for calling the ParameterServerBase obj's underlying member method code with example usage: obj.reset_state() without return types