easyappointments/vendor/sabre/vobject/lib/TimezoneGuesser/TimezoneGuesser.php

<?php

namespace Sabre\VObject\TimezoneGuesser;

use DateTimeZone;
use Sabre\VObject\Component\VTimeZone;

interface TimezoneGuesser
{
    public function guess(VTimeZone $vtimezone, bool $failIfUncertain = false): ?DateTimeZone;
}