Feiertagsverwaltung Methoden
Fixe Feiertage
AddFixedHoliday
AddFixedHolidays
AllDaysAreHolidays
FixedHolidayExists
RemoveFixedHoliday
RemoveFixedHolidays
RemoveAllFixedHolidays
Dynamische Feiertage
AddDynamicHoliday
AddDynamicHolidays
FindDynamicHoliday
RemoveDynamicHoliday
RemoveDynamicHolidays
RemoveAllDynamicHolidays
RemoveAllHolidays