import 'package:pip_services3_commons/pip_services3_commons.dart';
var additionalConfig1 = ConfigParams.fromTuples([
'my_store1.user', 'jdoe',
'my_store1.password', 'pass123',
'my_store1.pin', '321'
]);
var additionalConfig2 = ConfigParams.fromTuples([
'my_store2.user', 'David',
'my_store2.password', 'another_pass',
'my_store2.pin', '0000'
]);
var additionalConfig3 = ConfigParams.fromTuples(['param1', 'value1']);
var config = ConfigParams.mergeConfigs([additionalConfig1, additionalConfig2, additionalConfig3]);
print(config);