code: def test_fx_script_cross_net(self) -> None:
      input = torch.randn(2, 3)
      dcn = LowRankMixtureCrossNet(in_features=3, num_layers=2)
      dcn(input)
  
      # dry-run to initialize lazy module
      gm = GraphModule(dcn, Tracer().trace(dcn))
      torch.jit.script(gm)
  
imports: import unittest
  import torch
  from torch.fx import GraphModule, Tracer
  from torchrec.modules.crossnet import CrossNet, LowRankCrossNet, LowRankMixtureCrossNet, VectorCrossNet
label_desc: Use image node_id 3 for calling the TestLowRankMixtureCrossNet obj's underlying member method code with example usage: obj.test_fx_script_cross_net() without return types