Aqui está o meu objeto e eu defini todas as propriedades e funções, mas ainda me dá este erroresult is not defined.

Aqui está meu código

var Xml = {
    to      : null,
    from    : null,
    url     : null,
    result  : null,  //<--- I defined result here

    init: function (fromaddress, toaddress, link) {
        from    = fromaddress;
        to      = toaddress;
        url     = link;

        this.requestXml();
        return this;
    },

    requestXml: function () {
        $.ajax({
            type: "GET",
            url: url,
            dataType: "xml",
            success: this.parseXml
        });
    },

    parseXml: function (xml) {
        console.log('xml: ' + $(xml));
        result = $(xml); //<--- Assigning value to result here
    },

    getResult: function () {
        console.log('Result: ' + result); // <--- Here is says result is not defined
        return result;
    }
};

Como posso resolver este problema?

Atualizar

Eu estou chamando getResult () abaixo

var Route = {
fromurl : null,
tourl   : null,
from    : null,
to      : null,

init: function (fromaddress, toaddress) {
    from        = fromaddress;
    to          = toaddress;
    fromurl     = 'http://demo.com/url'+fromurl;
    tourl       = 'http://demo.com/url'+tourl;

    Route.searchRoute();
},

searchRoute: function () {
    var xml = Xml.init(from, to, fromurl);
    console.log(xml.getResult()); //<---- calling getResult();
}

 };