  x Document
   ,-[$DIR/tests/html5lib-tests-fixture/tests20_dat.63.html:1:1]
 1 | <math><annotation-xml></svg>x
   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Child
  x Element
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests20_dat.63.html:1:1]
 1 | <math><annotation-xml></svg>x
   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/tests20_dat.63.html:1:1]
 1 | <math><annotation-xml></svg>x
   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests20_dat.63.html:1:1]
 1 | <math><annotation-xml></svg>x
   :       ^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/tests20_dat.63.html:1:1]
 1 | <math><annotation-xml></svg>x
   :       ^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests20_dat.63.html:1:1]
 1 | <math><annotation-xml></svg>x
   :                             ^
   `----
  x Text
   ,-[$DIR/tests/html5lib-tests-fixture/tests20_dat.63.html:1:1]
 1 | <math><annotation-xml></svg>x
   :                             ^
   `----
