HtmlFile:test.html
  PsiElement(HTML_DOCUMENT)
    PsiElement(XML_PROLOG)
      <empty list>
    HtmlTag:p
      XmlToken:XML_START_TAG_START('<')
      XmlToken:XML_NAME('p')
      XmlToken:XML_TAG_END('>')
      HtmlTag:a
        XmlToken:XML_START_TAG_START('<')
        XmlToken:XML_NAME('a')
        PsiWhiteSpace(' ')
        PsiElement(XML_ATTRIBUTE)
          XmlToken:XML_NAME('aaa')
        PsiErrorElement:Tag start is not closed
          <empty list>
      XmlToken:XML_END_TAG_START('</')
      XmlToken:XML_NAME('p')
      XmlToken:XML_TAG_END('>')