  x Document
   ,-[$DIR/tests/html5lib-tests-fixture/doctype01_dat.30.html:1:1]
 1 | ,-> <!DOCTYPE root-element [SYSTEM OR PUBLIC FPI] "uri" [ 
 2 | |   <!-- internal declarations -->
 3 | `-> ]>
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/doctype01_dat.30.html:1:1]
 1 | ,-> <!DOCTYPE root-element [SYSTEM OR PUBLIC FPI] "uri" [ 
 2 | `-> <!-- internal declarations -->
 3 |     ]>
   `----
  x DocumentType
   ,-[$DIR/tests/html5lib-tests-fixture/doctype01_dat.30.html:1:1]
 1 | ,-> <!DOCTYPE root-element [SYSTEM OR PUBLIC FPI] "uri" [ 
 2 | `-> <!-- internal declarations -->
 3 |     ]>
   `----
  x Child
  x Element
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/doctype01_dat.30.html:3:1]
 2 | <!-- internal declarations -->
 3 | ]>
   : ^^
   `----
  x Text
   ,-[$DIR/tests/html5lib-tests-fixture/doctype01_dat.30.html:3:1]
 2 | <!-- internal declarations -->
 3 | ]>
   : ^^
   `----
