code: def _clear_state(self):
      self._out_cache, self._host_input_caches = None, None
  
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 4 for calling the AggLayerHost obj's underlying member method code with example usage: obj._clear_state() without return types