code: def _get_parameters(cls, optimizer):
      params = []
      for pg in optimizer.param_groups:
          params += list(pg["params"])
      return params
  
imports: import math
  from itertools import chain
  from typing import Optional
  import parlai.utils.logging
label_desc: Use image node_id 2 for calling the SafeFP16Optimizer obj's underlying member method code with example usage: obj._get_parameters(cls, optimizer) and returns: params