code: def test_sgd_wd(self):
      self._test_sgd(1, {"lr": 0.001, "weight_decay": 0.1}, 1e-6, 0)
  
imports: import numpy
  import torch
  import unittest
  from tinygrad import Tensor, Device
  from tinygrad.nn.optim import Adam, SGD, AdamW
  from tinygrad.helpers import CI
label_desc: Use image node_id 9 for calling the TestOptim obj's underlying member method code with example usage: obj.test_sgd_wd() without return types