SERIALIZE examples

STP to DOM:

CL-USER> (stp:serialize document (cxml-dom:make-dom-builder))

#<RUNE-DOM::DOCUMENT {1005A421F1}>

STP to xmls-style lists:

CL-USER> (stp:serialize document (cxml-xmls:make-xmls-builder))

(("x" . "") NIL)

Relax NG validation:

CL-USER> (let ((schema (cxml-rng:parse-compact #p"/home/david/demo.rnc")))
	   (stp:serialize document (cxml-rng:make-validator schema)))

Error: element example () not valid,
was expecting an element named "demo", in the namespace ""
   [Condition of type CXML-RNG:RNG-ERROR]