code: def test_window_reverse(self):
      x = torch.randn(16, 7, 7, 3)
      out = window_reverse(x, (28, 28))
      self.assertEqual(out.shape, (1, 3, 28, 28))
  
file_path: towhee/tests/unittests/models/max_vit/test_max_vit_utils.py
imports: import unittest
  import torch
  from towhee.models.max_vit.max_vit_utils import grid_partition, window_partition, get_relative_position_index, window_reverse, grid_reverse
label_desc: Use image node_id 4 for calling the MaxVitUtilsTest obj's underlying member method code with example usage: obj.test_window_reverse() without return types