exists this:param:lock this:cond toURI this:param:lock var:lock copy ffcpl:/tools/default-lock.xml var:lock exists this:param:action this:cond copy this:param:action#xpointer(/) var:action StringToCanonicalString this:param:action var:action copy lock var:action sloot.xpath2eval var:action .='lock' this:cond lock curi:var:lock unlock curi:var:lock copy ffcpl:/tools/void.xml this:response declareIntermediate this:response this:response