问我怎样才能知道哪个函数在javascript中被引用了？

EN

var whee = {
    test: function(ab) {
        console.log(ab);
        this.test2('Hello', 'World');
    },

    test2: function(a, b) {
        console.log(a+' '+b);
    }
};

function augment(obj, withFn) {
    var name, fn;
    for (name in obj) {
        fn = obj[name];
        if (typeof fn === 'function') {
            obj[name] = (function(name, fn) {
                var args = arguments;
                return function() {
                    withFn.apply(this, args);
                    fn.apply(this, arguments);
                }
            })(name, fn);
        }
    }
}

augment(whee, function(name, fn) {
    console.log("calling " + name);
});

whee.test('hi');