valuateMeWithParamsAndReturn(s1, s2) {
            return s1 + s2;
        }
        
        // test method invoke with simple parameters and simple return value
        // test evaluate javascript to invoke
        function EvaluateMeWithParamsAndStringReturn(s1, s2) {
            return `${s1}${s2}`;
        }

        // test method invoke with parameters, and returning complex type
        function AddNumbers(a, b) {
            var result = {
                "result": a + b,
                "operation