  x Document
   ,-[$DIR/tests/html5lib-tests-fixture/tests5_dat.4.html:1:1]
 1 | <iframe> <!---> </iframe>x
   : ^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Child
  x Element
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests5_dat.4.html:1:1]
 1 | <iframe> <!---> </iframe>x
   : ^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/tests5_dat.4.html:1:1]
 1 | <iframe> <!---> </iframe>x
   : ^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests5_dat.4.html:1:1]
 1 | <iframe> <!---> </iframe>x
   :         ^^^^^^^^
   `----
  x Text
   ,-[$DIR/tests/html5lib-tests-fixture/tests5_dat.4.html:1:1]
 1 | <iframe> <!---> </iframe>x
   :         ^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests5_dat.4.html:1:1]
 1 | <iframe> <!---> </iframe>x
   :                          ^
   `----
  x Text
   ,-[$DIR/tests/html5lib-tests-fixture/tests5_dat.4.html:1:1]
 1 | <iframe> <!---> </iframe>x
   :                          ^
   `----
