code: def has_cache(self):
      return self._enable_caching
  
imports: import contextlib
  import warnings
  import sys
  import torch
  from .None import utils
  from .opt import OptimWrapper
  from .scaler import LossScaler
  from ._amp_state import _amp_state, master_params, maybe_print
label_desc: Use image node_id 9 for calling the AmpHandle obj's underlying member method code with example usage: obj.has_cache() and returns: self