code: def update_question(self, question, publisher_name, extension_name, question_id):
          
          route_values = {}
          if publisher_name is not None:
              route_values['publisherName'] = self._serialize.url('publisher_name', publisher_name, 'str')
          if extension_name is not None:
              route_values['extensionName'] = self._serialize.url('extension_name', extension_name, 'str')
          if question_id is not None:
              route_values['questionId'] = self._serialize.url('question_id', question_id, 'long')
          content = self._serialize.body(question, 'Question')
          response = self._send(http_method='PATCH',
                                location_id='6d1d9741-eca8-4701-a3a5-235afc82dfa4',
                                version='5.1-preview.1',
                                route_values=route_values,
                                content=content)
          return self._deserialize('Question', response)
docs: UpdateQuestion.
          [Preview API] Updates an existing question for an extension.
          :param :class:`<Question> <azure.devops.v5_1.gallery.models.Question>` question: Updated question to be set for the extension.
          :param str publisher_name: Name of the publisher who published the extension.
          :param str extension_name: Name of the extension.
          :param long question_id: Identifier of the question to be updated for the extension.
          :rtype: :class:`<Question> <azure.devops.v5_1.gallery.models.Question>`