code: def test_nested_emphasis(self):
      self.assertMarkdownRenders(
          "This text is **bold *italic* *italic* bold**",
          "<p>This text is <strong>bold <em>italic</em> <em>italic</em> bold</strong></p>",
      )
  
imports: from markdown.test_tools import TestCase
label_desc: Use image node_id 22 for calling the TestNotEmphasis obj's underlying member method code with example usage: obj.test_nested_emphasis() without return types