YUI ModelList monkeypatch to allow model instances from other YUI sandboxes

model-list-patch-2531543.js

Y.ModelList.prototype._add = function (model, options) {
    var facade;

    options || (options = {});

    if (!(model instanceof Y.Model || (model._yuid && model.lists))) {
        model = new this.model(model);
    }

    if (this._clientIdMap[model.get('clientId')]) {
        this.fire('error', {
            error: 'Model is already in the list.',
            model: model,
            src  : 'add'
        });

        return;
    }

    facade = Y.merge(options, {
        index: this._findIndex(model),
        model: model
    });

    options.silent ? this._defAddFn(facade) : this.fire('add', facade);

    return model;
};