secureContainsKey method
Check if key exists in secure storage
Implementation
Future<bool> secureContainsKey(String key) async {
try {
final result = await methodChannel
.invokeMethod<bool>('secureContainsKey', {'key': key});
return result ?? false;
} on PlatformException catch (e) {
throw MCPSecureStorageException(
'Failed to check secure key: ${e.message}', e.details);
}
}