bsh:TimeseriesReferenceOnPointsConstraint leaf node

@prefix bsh: <https://brickschema.org/schema/BrickShape#> .
@prefix ref: <https://brickschema.org/schema/Brick/ref#> .
@prefix sh: <http://www.w3.org/ns/shacl#> .

bsh:TimeseriesReferenceOnPointsConstraint a sh:NodeShape ;
    sh:sparql [ a sh:SPARQLConstraint ;
            sh:message "Only Brick Points can have external timeseries references" ;
            sh:prefixes <https://brickschema.org/schema/1.4/Brick> ;
            sh:select """
            SELECT $this
            WHERE {
                $this ref:hasExternalReference ?ref .
                ?ref rdf:type ref:TimeseriesReference .
                FILTER NOT EXISTS { $this rdf:type/rdfs:subClassOf* brick:Point }
            }
        """ ] ;
    sh:targetSubjectsOf ref:hasExternalReference .