Telegram Bot - how to get a group chat id?

Question

I\'ve been using telegram_bot, and trying to get groupChat id to send notifications to group chat, but don\'t know which methods I have to use for it.

For getting ch

Answer 1

function doPost(e) {
    var contents = JSON.parse(e.postData.contents);
    //  GmailApp.sendEmail(Session.getEffectiveUser().getEmail(), "Telegram Bot Update",     JSON.stringify(contents, null, 4));
    var chat_id = contents.message.chat.id;
    var text = contents.message.text;
    var name = contents.message.from.first_name + " " +  contents.message.from.last_name;
    var sResponse = telegramBotMachine( chat_id, text, name );
}