code: def load_checkpoint(self, buffer):
      map_location = None if self.cuda else "cpu"
      checkpoint = torch.load(buffer, map_location=map_location)
      self.model.load_state_dict(checkpoint)
  
imports: import os
  import math
  import time
  import numpy
  import numpy
  from collections import namedtuple
  import torch
  import torch.nn
  import torch.nn.functional
  import torch.optim
  import base64
  import io
label_desc: Use image node_id 3 for calling the SimpleAgent obj's underlying member method code with example usage: obj.load_checkpoint(buffer) without return types