ids property
Gets the list of valid time zone ids advertised by this provider.
This list will be sorted in ordinal lexicographic order. It cannot be modified by callers, and must not be modified by the provider either: client code can safely treat it as thread-safe and deeply immutable.
In addition to the list returned here, providers always support the fixed-offset timezones with IDs 'UTC' and 'UTC+/-Offset'. These may or may not be included explicitly in this list.
Implementation
late final List<String> ids;