read method
Implementation
Future<String?> read(String key) async {
if (!isReady) await init();
try {
if (_storage.containsKey(key)) return _storage[key];
final value = await _readFromFile(key);
if (value != null) _storage[key] = value;
return value;
} catch (e) {
// Handle exceptions related to reading from secure storage
zprint('Error reading from secure storage: $e');
return null;
}
}