code: def _get_label(self, urn):
          
          node = self.resolver.getTextualNode(textId=urn)
          r = render_template(
              "cts/GetLabel.xml",
              request_urn=str(urn),
              full_urn=node.urn,
              metadata={
                  "groupname": [(literal.language, str(literal)) for literal in node.metadata.get(RDF_NAMESPACES.CTS.groupname)],
                  "title": [(literal.language, str(literal)) for literal in node.metadata.get(RDF_NAMESPACES.CTS.title)],
                  "description": [(literal.language, str(literal)) for literal in node.metadata.get(RDF_NAMESPACES.CTS.description)],
                  "label": [(literal.language, str(literal)) for literal in node.metadata.get(RDF_NAMESPACES.CTS.label)]
              },
              citation=Markup(node.citation.export(Mimetypes.XML.CTS))
          )
          return r, 200, {"content-type": "application/xml"}
docs: Provisional route for GetLabel request
  
          :param urn: URN to filter the resource
          :param inv: Inventory Identifier
          :return: GetLabel response