code: def test_standalone_understore_pairs(self):
      self.assertMarkdownRenders(
          "Foo __ __ __ __", "<p>Foo __ __ __ __</p>"
      )
  
imports: from markdown.test_tools import TestCase
label_desc: Use image node_id 6 for calling the TestNotEmphasis obj's underlying member method code with example usage: obj.test_standalone_understore_pairs() without return types