public HelloBotProperties(IConfiguration configuration)
{
var telegram = configuration.GetSection("Telegram"); // JSON: "Telegram"
var botToken = telegram["BotToken"]; // ENV: Telegram__BotToken, JSON: "Telegram:BotToken"
Api = new BotClient(botToken);
User = Api.GetMe();
_commandHelper = new BotCommandHelper(this);
// Delete my old commands
Api.DeleteMyCommands();
// Set my commands
Api.SetMyCommands(
new BotCommand("hello", "Hello world!"));
// Delete webhook to use Long Polling
Api.DeleteWebhook();
}