code: def test_temporal_concat_fusion(self):
      model = make_fusion_layer(
          "temporal_concat",
          [self.fake_input_1.shape[-1], self.fake_input_2.shape[-1]],
      )
      input_list = [self.fake_input_1, self.fake_input_2]
      output = model(input_list)
  
      expected_output = torch.cat(input_list, dim=-2)
      self.assertTrue(torch.equal(output, expected_output))
      self.assertEqual(model.output_dim, self.fake_input_2.shape[-1])
  
file_path: pytorchvideo/tests/test_layers_fusion.py
imports: import unittest
  import torch
  from pytorchvideo.layers import make_fusion_layer
label_desc: Use image node_id 4 for calling the TestFusion obj's underlying member method code with example usage: obj.test_temporal_concat_fusion() without return types