load method
void
load()
Implementation
void load() async {
await _ensurePrefix();
final prefs = await SharedPreferences.getInstance();
final keys = prefs.getKeys();
Map<String, ExperimentVariant> newMap = {};
for (String key in keys) {
dynamic value = prefs.get(key);
newMap[key] = ExperimentVariant.fromMap(jsonDecode(value));
}
map = newMap;
}