Code:
public void printBirthdays()
{
    Birthdays   birthdays;
    UserTable   userTable;
    ;

    while select
      birthdays
      where (birthdays.Date   == DateTimeUtil::utcNow())
         && (birthdays.UserId == 'DFYX')
    {
        userTable = UserTable::find(birthdays.UserId);
        info(strFmt('Alles gute zu deinem %1. Geburtstag, %2!', userTable.calcAge(), birthdays.UserId));
    }
}