code: def _get_subject_alt(self, name):
          
  
          if self._subject_alt_name is None:
              return []
  
          output = []
          for general_name in self._subject_alt_name:
              if general_name.name == name:
                  output.append(general_name.native)
          return output
docs: Returns the native value for each value in the subject alt name
          extension reqiest that is an asn1crypto.x509.GeneralName of the type
          specified by the name param
  
          :param name:
              A unicode string use to filter the x509.GeneralName objects by -
              is the choice name x509.GeneralName
  
          :return:
              A list of unicode strings. Empty list indicates no subject alt
              name extension request.