code: def test_unicode_strings_passed_through(self):
      s = "Look\u2014some UTF-8!"
      assert not isinstance(s, bytes), (type(s), bytes)
      self.assertEqual(
          plugin_util.safe_html(s), "Look\u2014some UTF-8!"
      )
  
imports: import textwrap
  from tensorboard import context
  from tensorboard import plugin_util
  from tensorboard import test
  from tensorboard.backend import experiment_id
label_desc: Use image node_id 6 for calling the SafeHTMLTest obj's underlying member method code with example usage: obj.test_unicode_strings_passed_through() without return types