// SAMPLE STORED PROCEDURE
function sample() {
var prefix = "";
var collection = getContext().getCollection();
var data = collection.readDocuments(collection.getSelfLink());
console.log(data);
console.log(JSON.stringify(data));
// Query documents and take 1st item.
var isAccepted = collection.queryDocuments(
    collection.getSelfLink(),
    'SELECT * FROM root r',
function (err, feed, options) {
    if (err) throw err;

    // Check the feed and if empty, set the body to 'no docs found',
    // else take 1st element from feed
    if (!feed || !feed.length) {
        var response = getContext().getResponse();
        response.setBody('no docs found');
    }
    else {
        var response = getContext().getResponse();
        var body = { prefix: prefix, feed: feed[0] };
        response.setBody(JSON.stringify(body));
    }
});

if (!isAccepted) throw new Error('The query was not accepted by the server.');
}