  x Document
   ,-[$DIR/tests/html5lib-tests-fixture/inbody01_dat.0.html:1:1]
 1 | <button>1</foo>
   : ^^^^^^^^^^^^^^^
   `----
  x Child
  x Element
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/inbody01_dat.0.html:1:1]
 1 | <button>1</foo>
   : ^^^^^^^^^^^^^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/inbody01_dat.0.html:1:1]
 1 | <button>1</foo>
   : ^^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/inbody01_dat.0.html:1:1]
 1 | <button>1</foo>
   :         ^
   `----
  x Text
   ,-[$DIR/tests/html5lib-tests-fixture/inbody01_dat.0.html:1:1]
 1 | <button>1</foo>
   :         ^
   `----
