fromRRule static method
Implementation
static RecurrenceType fromRRule(String rrule) =>
switch (rrule.toUpperCase()) {
final r when r.isEmpty => .never,
final r when r.contains('DAILY') => .daily,
final r when r.contains('WEEKLY') => .weekly,
final r when r.contains('MONTHLY') => .monthly,
final r when r.contains('YEARLY') => .yearly,
_ => .never,
};