code: def set_link(self, prop, value):
          
          # https://rdflib.readthedocs.io/en/stable/
          # URIRef == identifiers (urn, http, URI in general)
          # Literal == String or Number (can have a language)
          # BNode == Anonymous nodes (So no specific identifier)
          #		eg. BNode : Edition(MartialEpigrams:URIRef) ---has_metadata--> Metadata(BNode)
          if not isinstance(value, URIRef):
              value = URIRef(value)
  
          self.metadata.add(prop, value)
docs: Set given link in CTS Namespace
  
          .. example::
              collection.set_link(NAMESPACES.CTS.about, "urn:cts:latinLit:phi1294.phi002")
  
          :param prop: Property to set (Without namespace)
          :param value: Value to set for given property