You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: thread_extractor.go
    path of file: ./repos/incubator-devlake/backend/plugins/slack/tasks
    
    the code of the file until where you have to start completion: /*
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements.  See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache L
    
func ExtractThread(taskCtx plugin.SubTaskContext) errors.Error {
	data := taskCtx.GetData().(*SlackTaskData)
	extractor, err := api.NewApiExtractor(api.ApiExtractorArgs{
		RawDataSubTaskArgs: api.RawDataSubTaskArgs{
			Ctx: taskCtx,
			Params: SlackApiParams{
				ConnectionId: data.Options.ConnectionId,
			},
			Table: RAW_THREAD_TABLE,
		},
		Extract: func(row *api.RawData) ([]interface{}, errors.Error) {
			threadInput := &ThreadInput{}
			err := errors.Convert(json.Unmarshal(row.Input, threadInput))
			if err != nil {
				return nil, err
			}

			body := &apimodels.SlackChannelMessageResultItem{}
			err = errors.Convert(json.Unmarshal(row.Data, body))
			if err != nil {
				return nil, err
			}
			message := &models.SlackChannelMessage{}
			message.ConnectionId = data.Options.ConnectionId
			message.ChannelId = threadInput.ChannelId
			message.ClientMsgId = body.ClientMsgId
			message.Type = body.Type
			message.Subtype = body.Subtype
			message.Ts = body.Ts
			message.ThreadTs = body.ThreadTs
			message.User = body.User
			message.Text = body.Text
			message.Team = body.Team
			message.ReplyCount = body.ReplyCount
			message.ReplyUsersCount = body.ReplyUsersCount
			message.LatestReply = body.LatestReply
			message.IsLocked = body.IsLocked
			message.Subscribed = body.Subscribed
			message.ParentUserId = body.ParentUserId
			return []interface{}{message}, nil
		},
	})
	if err != nil {
		return err
	}

	return extractor.Execute()
}