def METHOD_NAME(self):
    paragraph_aside = '<p data-block-key="89kgh">This is paragraph with <b>bold text</b></p>'
    paragraph_aside_with_span = '<p data-block-key="89kgh"><span>This is paragraph with <b>bold text</b></span></p>'
    heading_aside = '<h3 data-block-key="89agh">This is a heading</h3>'
    heading_aside_with_span = '<h3 data-block-key="89agh"><span>This is a heading</span></h3>'
    self.assertEqual(richtext_aside(paragraph_aside), paragraph_aside_with_span)
    self.assertEqual(richtext_aside(heading_aside), heading_aside_with_span)