code: def _amp_lazy_init(self):
      stash = self._amp_stash
  
      if not stash.lazy_init_called:
          self._lazy_init_maybe_master_weights()
          stash.lazy_init_called = True
  
imports: import types
  from ..fp16_utils import master_params_to_model_params
  from ..multi_tensor_apply import multi_tensor_applier
  from ._amp_state import maybe_print
  import torch
  from ..optimizers import FusedSGD
label_desc: Use image node_id 13 for calling a global function with example usage: _amp_lazy_init() without return types