Backbone collection subclass attempting to wrap a pattern during initialization. Does not seem to work!

collection.js

define([
    'underscore',
    'backbone'
], function (_, Backbone) {
    var Collection = Backbone.Collection.extend({
        initialize: function(klass, objects) {
            Backbone.Collection.prototype.initialize.
              apply(this, _.flatten([objects]), { model: klass });
        }
    });

    return Collection;
});