code: def test_smoke(self, device, dtype):
      batch_size = 2
      trans_01 = identity_matrix(
          batch_size=batch_size, device=device, dtype=dtype
      )
      trans_02 = identity_matrix(
          batch_size=batch_size, device=device, dtype=dtype
      )
  
      to_check_1 = kornia.geometry.relative_transformation(
          trans_01, trans_02
      )
      to_check_2 = kornia.geometry.relative_transformation(
          trans_01[0], trans_02[0]
      )
  
      assert to_check_1.shape == (batch_size, 4, 4)
      assert to_check_2.shape == (4, 4)
  
imports: import pytest
  import torch
  from torch.autograd import gradcheck
  import kornia
  import kornia.geometry.linalg
  import kornia.testing
  from kornia.testing import BaseTester, assert_close
label_desc: Use image node_id 1 for calling the TestRelativeTransformation obj's underlying member method code with example usage: obj.test_smoke(device, dtype) without return types