code: def optInit(self):
      self.pytorchGPUVar = []
      for optVar in self.optVarList:
          self.pytorchGPUVar.append(
              torch.zeros(
                  size=(self.total_classes, self.embed_dimension),
                  dtype=self.dtype,
                  device=self.deviceType,
                  pin_memory=self.pinType,
              )
          )
  
imports: import torch
  import os
  import numpy
label_desc: Use image node_id 2 for calling the PytorchOptimizerFactory obj's underlying member method code with example usage: obj.optInit() without return types