code: def test_lazy_wait_dict(self) -> None:
      class Model(torch.nn.Module):
          def __init__(self):
              super().__init__()
              self.dict = {"t1": torch.ones(2, 3)}
              self.wait_dict = NeedWaitDict(self.dict, "t1")
  
          def forward(self) -> torch.Tensor:
              return self.wait_dict["t1"] + 2
  
      m = Model()
      ref_res = m()
      self.assertTrue(torch.equal(ref_res, 5 * torch.ones(2, 3)))
  
      # ensure fx tracing works
      gm = torch.fx.symbolic_trace(m)
      traced_res = gm()
      self.assertTrue(torch.equal(traced_res, ref_res))
  
imports: import unittest
  from typing import Dict
  import torch
  import torch.fx
  from torchrec.distributed.types import LazyAwaitable
label_desc: Use image node_id 8 for calling the TestLazyAwaitable obj's underlying member method code with example usage: obj.test_lazy_wait_dict() and returns: unknown