initialize method
Call this method once in main.dart to initialize the package.
Implementation
Future<void> initialize() async {
_prefs = await SharedPreferences.getInstance();
// Check if this is the first time we're running this
if (_prefs!.getString(_StorageKeys.firstInstallDate) == null) {
await _prefs!.setString(
_StorageKeys.firstInstallDate,
DateTime.now().toIso8601String(),
);
}
}