code: def beforeForwardPass(
      self, retrievedPosIndexes, retrievedNegIndexes=None
  ):
      torch.cuda.synchronize()
  
      reshapedRetrieval = self._getReshapedRetrieval(
          retrievedPosIndexes, retrievedNegIndexes
      )
  
      for idx, optVar in enumerate(self.optVarList):
          self.given_optimizer.state_dict()["state"][self.optimizerKey][
              optVar
          ] = self.pytorchGPUVar[idx][reshapedRetrieval]
  
imports: import torch
  import os
  import numpy
label_desc: Use image node_id 3 for calling the PytorchOptimizerFactory obj's underlying member method code with example usage: obj.beforeForwardPass(retrievedPosIndexes, retrievedNegIndexes) without return types