bacnet:object-identifier leaf node

@prefix bacnet: <http://data.ashrae.org/bacnet/2020#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

bacnet:object-identifier a bacnet:StandardProperty,
        rdf:Property,
        owl:DatatypeProperty ;
    rdfs:label "object-identifier" ;
    bacnet:propertyEnum bacnet:PropertyIdentifier-object-identifier ;
    bacnet:propertyName "object-identifier" ;
    bacnet:propertyOf bacnet:Object ;
    bacnet:propertyRef bacnet:Object_Identifier ;
    rdfs:subPropertyOf bacnet:ReadableProperty ;
    skos:definition "The BACnet object identifier" .