code: def qualify(self):
          
          defns = self.root.defaultNamespace()
          if Namespace.none(defns):
              defns = self.schema.tns
          for a in self.autoqualified():
              ref = getattr(self, a)
              if ref is None:
                  continue
              if isqref(ref):
                  continue
              qref = qualify(ref, self.root, defns)
              log.debug('%s, convert %s="%s" to %s', self.id, a, ref, qref)
              setattr(self, a, qref)
docs: Convert attribute values, that are references to other
          objects, into I{qref}.  Qualfied using default document namespace.
          Since many wsdls are written improperly: when the document does
          not define a default namespace, the schema target namespace is used
          to qualify references.