def run(self, resource, *args, **kwds):
"""change the rdf resource
"""
api = IGetVersions(self.context)
newer = api.later_versions()
older = api.earlier_versions()
resource.dcterms_isReplacedBy = [
rdflib.URIRef(i['url']) for i in newer
]
resource.dcterms_replaces = [rdflib.URIRef(a['url']) for a in older]
resource.save()
