code: def test_forth_and_back(self, device, dtype):
      data = torch.rand(3, 4, 5, device=device, dtype=dtype)
      xyz = kornia.color.rgb_to_xyz
      rgb = kornia.color.xyz_to_rgb
  
      data_out = xyz(rgb(data))
      self.assert_close(data_out, data)
  
imports: import pytest
  import torch
  from torch.autograd import gradcheck
  import kornia
  from kornia.testing import BaseTester
label_desc: Use image node_id 5 for calling the TestRgbToXyz obj's underlying member method code with example usage: obj.test_forth_and_back(device, dtype) without return types