  x Document
   ,-[$DIR/tests/html5lib-tests-fixture/foreign-fragment_dat.13.fragment_math_mtext.html:1:1]
 1 | </mtext>X
   : ^^^^^^^^^
   `----
  x Child
  x Element
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/foreign-fragment_dat.13.fragment_math_mtext.html:1:1]
 1 | </mtext>X
   :         ^
   `----
  x Text
   ,-[$DIR/tests/html5lib-tests-fixture/foreign-fragment_dat.13.fragment_math_mtext.html:1:1]
 1 | </mtext>X
   :         ^
   `----
