Extended dojo/store/JsonRest with ability to mutate the server response

MyStore.js

define([
	"dojo/_base/declare",
	"dojo/store/JsonRest",
	"dojo/store/util/QueryResults"
], function(declare, JsonRest, QueryResults){
	return declare(JsonRest, {
		query: function(query, queryOptions){
			// Issue original query
			var results = this.inherited(arguments);

			// Using the promise-driven nature of queries,
			// and then returning a promise,
			// basically deref and provide the items,
			// wrapped in the QueryResults API as store consumers expect
			var itemsPromise = results.then(function(data){
				return data.items;
			});

			return QueryResults(itemsPromise);
		}
	});
});