code: def _following_siblings(
              self, qname: Union[QualName, bool] = None) -> List[InstanceNode]:
          
          if qname and self.qual_name != qname:
              return []
          res = []
          en = self
          for _ in self.after:
              en = en.next()
              res.append(en)
          return res
docs: XPath - return the list of receiver's following siblings.