code: def assert_expected_xml(self, combined_content, test_svg_files):
      self.assertEqual(
          '<?xml version="1.0" ?><svg><defs>'
          + "".join(
              [
                  test_file.expected_content
                  for test_file in test_svg_files
              ]
          )
          + "</defs></svg>",
          combined_content,
      )
  
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 3 for calling the MatBundleIconSvgTest obj's underlying member method code with example usage: obj.assert_expected_xml(combined_content, test_svg_files) without return types