code: def test_dynamo(self, device, dtype, torch_optimizer):
      B, C, H, W = 2, 1, 4, 4
      img = torch.ones(B, C, H, W, device=device, dtype=dtype)
      op = kornia.color.raw_to_rgb_2x2_downscaled
      op_optimized = torch_optimizer(op)
      self.assert_close(
          op(img, kornia.color.CFA.BG),
          op_optimized(img, kornia.color.CFA.BG),
      )
  
imports: import warnings
  import pytest
  import torch
  from packaging import version
  from torch.autograd import gradcheck
  import kornia
  from kornia.testing import BaseTester, assert_close
label_desc: Use image node_id 8 for calling the TestRawToRgb2x2Downscaled obj's underlying member method code with example usage: obj.test_dynamo(device, dtype, torch_optimizer) without return types