Dom_svg.langSpace
method xmllang : Js_of_ocaml__Js.js_string Js_of_ocaml__Js.t Js_of_ocaml__Js.prop
method xmlspace : Js_of_ocaml__Js.js_string Js_of_ocaml__Js.t Js_of_ocaml__Js.prop