code: def to_dict(self):
      ret_dict = {
          "module_name": "torch.optim",
          "item_name": type(self).__name__,
          "kwargs": convert_tuples_to_lists(self.param_dict),
      }
      return ret_dict
  
imports: import torch
  from fate.components.components.nn.loader import Loader
  from torch.nn import Sequential
  import json
label_desc: Use image node_id 2 for calling the TorchOptimizer obj's underlying member method code with example usage: obj.to_dict() and returns: ret_dict