$manager->getMe(); // Fired by default bot specified in BotManager
$manager->bot('bot2')->getMe(); // Fired by `bot2` specified in BotManager

// Functional handler
$handler = function(TeleBot $bot, Update $update, $next) {
    if ($update->message->text === '/start') {
        return $bot->sendMessage([
            'chat_id' => $update->chat()->id,
            'text' => 'Hello, World!'
        ]);
    }

    return $next();
};


// Object oriented handler
class YourUpdateHandler extends CommandHandler
{
    protected static $aliases = ['/start'];
    protected static $description = 'Your description';

    public function handle()
    {
        return $this->sendMessage([
            'text' => 'Hello, World!'
        ]);
    }
}