code: func (item *Item) SyncLikers() error {
  	resp := respLikers{}
  	insta := item.media.instagram()
  	body, err := insta.sendSimpleRequest(urlMediaLikers, item.ID)
  	if err != nil {
  		return err
  	}
  	err = json.Unmarshal(body, &resp)
  	if err == nil {
  		item.Likers = resp.Users
  	}
  	return err
  }
docs: // SyncLikers fetch new likers of a media
  //
  // This function updates Item.Likers value