code: def pre_export(self, model):
      pass
  
imports: import torch
  from fairseq.utils import clip_grad_norm_
  from pytext.config import ConfigBase
  from pytext.config.component import Component, ComponentType
label_desc: Use image node_id 3 for calling the Optimizer obj's underlying member method code with example usage: obj.pre_export(model) without return types