code: def set_label(self, label, lang):
          
          try:
              self.metadata.add(SKOS.prefLabel, Literal(label, lang=lang))
              self.graph.addN([
                  (self.asNode(), RDFS.label, Literal(label, lang=lang), self.graph),
              ])
          except Exception as E:
              pass
docs: Add the label of the collection in given lang
  
          :param label: Label Value
          :param lang:  Language code