code: def get_comment(self, project, work_item_id, comment_id, include_deleted=None, expand=None):
          
          route_values = {}
          if project is not None:
              route_values['project'] = self._serialize.url('project', project, 'str')
          if work_item_id is not None:
              route_values['workItemId'] = self._serialize.url('work_item_id', work_item_id, 'int')
          if comment_id is not None:
              route_values['commentId'] = self._serialize.url('comment_id', comment_id, 'int')
          query_parameters = {}
          if include_deleted is not None:
              query_parameters['includeDeleted'] = self._serialize.query('include_deleted', include_deleted, 'bool')
          if expand is not None:
              query_parameters['$expand'] = self._serialize.query('expand', expand, 'str')
          response = self._send(http_method='GET',
                                location_id='608aac0a-32e1-4493-a863-b9cf4566d257',
                                version='5.1-preview.3',
                                route_values=route_values,
                                query_parameters=query_parameters)
          return self._deserialize('Comment', response)
docs: GetComment.
          [Preview API] Returns a work item comment.
          :param str project: Project ID or project name
          :param int work_item_id: Id of a work item to get the comment.
          :param int comment_id: Id of the comment to return.
          :param bool include_deleted: Specify if the deleted comment should be retrieved.
          :param str expand: Specifies the additional data retrieval options for work item comments.
          :rtype: :class:`<Comment> <azure.devops.v5_1.work-item-tracking.models.Comment>`