code: def test_md5_checksum_matches_expected_checksum():
      expected_md5_checksum = "4d5e587120171bc1ba4d49e2aa862a12"  # calc'd w/ http://onlinemd5.com/
      filepath = os.path.join(
          os.path.dirname(__file__), "config/base_config.json"
      )
      computed_md5_checksum = data_handlers.md5_checksum(filepath)
      assert expected_md5_checksum == computed_md5_checksum
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_md5_checksum_matches_expected_checksum() without return types