get method
Implementation
@override
Map<String, dynamic>? get(String? key) {
if (key == null) {
return null;
}
final entry = _storage[key];
if (entry == null) {
return null;
}
if (entry.isExpired) {
_storage.remove(key);
return null;
}
return entry.value as Map<String, dynamic>?;
}