module.exports = function(){
    var originalInit = this.prototype.initialize;
    this.prototype.initialize = function(){
        this.isSaved = true;
        this.on('change', function(){
            this.isSaved = false;
        }, this);
        this.on('sync', function(){
            this.isSaved = true;
        }, this);
        if(originalInit) {
            originalInit.call(this);
        }
    };
    return this;
};