code: def test_combine_single_svg(self):
      test_files = [TEST_SVG_A]
      self.write_svgs(test_files)
      output = self.combine_svgs(test_files)
      self.assert_expected_xml(output, 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 5 for calling the MatBundleIconSvgTest obj's underlying member method code with example usage: obj.test_combine_single_svg() without return types