code: def test_convert_module():
      precision = DoublePrecision()
      module = torch.nn.Linear(2, 2)
      assert module.weight.dtype == module.bias.dtype == torch.float32
      module = precision.convert_module(module)
      assert module.weight.dtype == module.bias.dtype == torch.float64
  
label_desc: Use image node_id 2 for calling a global function with example usage: test_convert_module() without return types