  x Document
   ,-[$DIR/tests/html5lib-tests-fixture/tests14_dat.3.html:1:1]
 1 | <!DOCTYPE html><html xml:lang=bar><html xml:lang=foo>
   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests14_dat.3.html:1:1]
 1 | <!DOCTYPE html><html xml:lang=bar><html xml:lang=foo>
   : ^^^^^^^^^^^^^^^
   `----
  x DocumentType
   ,-[$DIR/tests/html5lib-tests-fixture/tests14_dat.3.html:1:1]
 1 | <!DOCTYPE html><html xml:lang=bar><html xml:lang=foo>
   : ^^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests14_dat.3.html:1:1]
 1 | <!DOCTYPE html><html xml:lang=bar><html xml:lang=foo>
   :                ^^^^^^^^^^^^^^^^^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/tests14_dat.3.html:1:1]
 1 | <!DOCTYPE html><html xml:lang=bar><html xml:lang=foo>
   :                ^^^^^^^^^^^^^^^^^^^
   `----
  x Attribute
   ,-[$DIR/tests/html5lib-tests-fixture/tests14_dat.3.html:1:1]
 1 | <!DOCTYPE html><html xml:lang=bar><html xml:lang=foo>
   :                      ^^^^^^^^^^^^
   `----
  x Child
  x Element
