<?xml version="1.0" encoding="UTF-8"?>
<form>
  <input name="username" type="text"/>
  <input name="password" type="password" required="required"/>
  <input name="remember" type="checkbox"/>
  <br/>
  <hr/>
  <separator></separator>
  <empty/>
  <empty></empty>
  <attrs-only id="42" class="primary" data-value="hello" data-count="0"/>
  <whitespace-only>   </whitespace-only>
  <empty-attribute value=""/>
  <self-closing-with-text-sibling/>plain text after a self-closing element<self-closing-again/>
</form>
