code: public static PropertyIdValue makePropertyIdValue(String id, String siteIri) {
  		return factory.getPropertyIdValue(id, siteIri);
  	}
docs: Creates a {@link PropertyIdValue}.
  
  @param id
  a string of the form Pn... where n... is the string
  representation of a positive integer number
  @param siteIri
  IRI to identify the site, usually the first part of the entity
  IRI of the site this belongs to, e.g.,
  "http://www.wikidata.org/entity/"
  @return a {@link PropertyIdValue} corresponding to the input