IncomingEventManager::handleAttendeesByUser

static function handleAttendeesByUser(array $attendees, $answer, $userId)
{
	$result = [];
	foreach ($attendees as $attendee)
	{
		if ($attendee['ID'] == $userId)
		{
			$attendee['STATUS'] = $answer ? 'accepted' : 'declined';
		}

		$result[$attendee['ID']] = $attendee;
	}

	return $result;
}