code: func (bot *BotAPI) GetChatMember(config ChatConfigWithUser) (ChatMember, error) {
  	v := url.Values{}
  
  	if config.SuperGroupUsername == "" {
  		v.Add("chat_id", strconv.FormatInt(config.ChatID, 10))
  	} else {
  		v.Add("chat_id", config.SuperGroupUsername)
  	}
  	v.Add("user_id", strconv.Itoa(config.UserID))
  
  	resp, err := bot.MakeRequest("getChatMember", v)
  	if err != nil {
  		return ChatMember{}, err
  	}
  
  	var member ChatMember
  	err = json.Unmarshal(resp.Result, &member)
  
  	bot.debugLog("getChatMember", v, member)
  
  	return member, err
  }
docs: // GetChatMember gets a specific chat member.