  x Document
   ,-[$DIR/tests/fixture/document_type/internal_subset_empty-2/input.xml:1:1]
 1 | ,-> <!DOCTYPE greeting [ ] >
 2 | `-> <root>test</root>
   `----
  x Child
   ,-[$DIR/tests/fixture/document_type/internal_subset_empty-2/input.xml:1:1]
 1 | <!DOCTYPE greeting [ ] >
   : ^^^^^^^^^^^^^^^^^^^^^^^^
 2 | <root>test</root>
   `----
  x DocumentType
   ,-[$DIR/tests/fixture/document_type/internal_subset_empty-2/input.xml:1:1]
 1 | <!DOCTYPE greeting [ ] >
   : ^^^^^^^^^^^^^^^^^^^^^^^^
 2 | <root>test</root>
   `----
  x Child
   ,-[$DIR/tests/fixture/document_type/internal_subset_empty-2/input.xml:2:1]
 1 | <!DOCTYPE greeting [ ] >
 2 | <root>test</root>
   : ^^^^^^^^^^^^^^^^^
   `----
  x Element
   ,-[$DIR/tests/fixture/document_type/internal_subset_empty-2/input.xml:2:1]
 1 | <!DOCTYPE greeting [ ] >
 2 | <root>test</root>
   : ^^^^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/fixture/document_type/internal_subset_empty-2/input.xml:2:1]
 1 | <!DOCTYPE greeting [ ] >
 2 | <root>test</root>
   :       ^^^^
   `----
  x Text
   ,-[$DIR/tests/fixture/document_type/internal_subset_empty-2/input.xml:2:1]
 1 | <!DOCTYPE greeting [ ] >
 2 | <root>test</root>
   :       ^^^^
   `----
