code: def test_combine_no_files(self):
      test_files = [TEST_SVG_A]
      with self.assertRaises(FileNotFoundError):
          self.combine_svgs(test_files)
  
file_path: tensorboard/tensorboard/tools/mat_bundle_icon_svg_test.py
imports: import dataclasses
  import os
  from tensorboard import test
  from tensorboard.tools import mat_bundle_icon_svg
label_desc: Use image node_id 6 for calling the MatBundleIconSvgTest obj's underlying member method code with example usage: obj.test_combine_no_files() without return types