HtmlFile:test.html
  PsiElement(HTML_DOCUMENT)
    PsiElement(XML_PROLOG)
      <empty list>
    HtmlTag:html
      XmlToken:XML_START_TAG_START('<')
      XmlToken:XML_NAME('html')
      XmlToken:XML_TAG_END('>')
      XmlToken:XML_END_TAG_START('</')
      XmlToken:XML_NAME('html')
      XmlToken:XML_TAG_END('>')