  x Document
   ,-[$DIR/tests/html5lib-tests-fixture/html5test-com_dat.5.html:1:1]
 1 | <!DOCTYPE html>
   : ^^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/html5test-com_dat.5.html:1:1]
 1 | <!DOCTYPE html>
   : ^^^^^^^^^^^^^^^
   `----
  x DocumentType
   ,-[$DIR/tests/html5lib-tests-fixture/html5test-com_dat.5.html:1:1]
 1 | <!DOCTYPE html>
   : ^^^^^^^^^^^^^^^
   `----
  x Child
  x Element
