manhduy

class Calculator {

    fun sum(a: Int, b: Int) = a + b
}

manhduy

Future<Response> get(String url) async {
    String wsseHeader = await generateAuthHeader();
    final response = await httpClient.get(url,
        headers: {
          HttpHeaders.contentTypeHeader: 'application/vnd.api+json',
          'Authorization': 'WSSE profile="UsernameToken"',
          'X-WSSE': wsseHeader
        },

    );