  x Document
   ,-[$DIR/tests/html5lib-tests-fixture/tests2_dat.43.html:1:1]
 1 | <!DOCTYPE html><!-- XXX - XXX - XXX -->
   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests2_dat.43.html:1:1]
 1 | <!DOCTYPE html><!-- XXX - XXX - XXX -->
   : ^^^^^^^^^^^^^^^
   `----
  x DocumentType
   ,-[$DIR/tests/html5lib-tests-fixture/tests2_dat.43.html:1:1]
 1 | <!DOCTYPE html><!-- XXX - XXX - XXX -->
   : ^^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests2_dat.43.html:1:1]
 1 | <!DOCTYPE html><!-- XXX - XXX - XXX -->
   :                ^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Comment
   ,-[$DIR/tests/html5lib-tests-fixture/tests2_dat.43.html:1:1]
 1 | <!DOCTYPE html><!-- XXX - XXX - XXX -->
   :                ^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Child
  x Element
