code: def create_or_update_page(self, parameters, project, wiki_identifier, path, version, comment=None):
          
          route_values = {}
          if project is not None:
              route_values['project'] = self._serialize.url('project', project, 'str')
          if wiki_identifier is not None:
              route_values['wikiIdentifier'] = self._serialize.url('wiki_identifier', wiki_identifier, 'str')
          query_parameters = {}
          if path is not None:
              query_parameters['path'] = self._serialize.query('path', path, 'str')
          if comment is not None:
              query_parameters['comment'] = self._serialize.query('comment', comment, 'str')
          content = self._serialize.body(parameters, 'WikiPageCreateOrUpdateParameters')
          response = self._send(http_method='PUT',
                                location_id='25d3fbc7-fe3d-46cb-b5a5-0b6f79caf27b',
                                version='5.0',
                                route_values=route_values,
                                query_parameters=query_parameters,
                                content=content)
          response_object = models.WikiPageResponse()
          response_object.page = self._deserialize('WikiPage', response)
          response_object.eTag = response.headers.get('ETag')
          return response_object
docs: CreateOrUpdatePage.
          Creates or edits a wiki page.
          :param :class:`<WikiPageCreateOrUpdateParameters> <azure.devops.v5_0.wiki.models.WikiPageCreateOrUpdateParameters>` parameters: Wiki create or update operation parameters.
          :param str project: Project ID or project name
          :param str wiki_identifier: Wiki Id or name.
          :param str path: Wiki page path.
          :param String version: Version of the page on which the change is to be made. Mandatory for `Edit` scenario. To be populated in the If-Match header of the request.
          :param str comment: Comment to be associated with the page operation.
          :rtype: :class:`<WikiPageResponse> <azure.devops.v5_0.wiki.models.WikiPageResponse>`