rther limit results
                // to the geographic bounds representing the
                // region of New South Wales.
                bbox: [139.965, -38.03, 155.258, -27.839],

                // Apply a client-side filter to further limit results
                // to those strictly within the New South Wales region.
                filter: function (item) {
                    // returns true if item contains New South Wales region
                    return item.context.some((i) => {
          