code: def _get_error_from_guest(self):
      error = self.ctx.guest.get(self._bw_suffix.format(self._bw_count))
      self._bw_count += 1
      return error
  
imports: import torch
  from typing import List, Literal
  import torch
  from fate.arch import Context
  from torch.nn.modules.module import T
label_desc: Use image node_id 3 for calling the AggLayerHost obj's underlying member method code with example usage: obj._get_error_from_guest() and returns: error