
sem.curieShorten( iri as sem.iri, [mapping as Object] ) as String
This function shortens an IRI into a CURIE 
		(Compact URI) into a sem:iri object. Returns the IRI string 
		unchanged if no mapping is available.
| Parameters | |
|---|---|
| iri | An IRI. | 
| mapping | An optional set of prefix mappings. If not specified, a default set of prefixes is used. | 
const sem = require("/MarkLogic/semantics.xqy");
      
sem.curieShorten(sem.iri("http://xmlns.com/foaf/0.1/person2"));
// shortens and returns the CURIE (Compact URI) as a string 
=>
foaf:person2