protected function result()
 {
     $request_body = $this->input();
     $queue_name = $this->validate_queue($request_body['queue']);
     if (is_wp_error($queue_name)) {
         return $queue_name;
     }
     require_once JETPACK__PLUGIN_DIR . 'sync/class.jetpack-sync-queue.php';
     if (!isset($request_body['buffer_id'])) {
         return new WP_Error('missing_buffer_id', 'Please provide a buffer id', 400);
     }
     if (!isset($request_body['item_ids']) || !is_array($request_body['item_ids'])) {
         return new WP_Error('missing_item_ids', 'Please provide a list of item ids in the item_ids argument', 400);
     }
     //Limit to A-Z,a-z,0-9,_,-
     $request_body['buffer_id'] = preg_replace('/[^A-Za-z0-9]/', '', $request_body['buffer_id']);
     $request_body['item_ids'] = array_filter(array_map(array('Jetpack_JSON_API_Sync_Close_Endpoint', 'sanitize_item_ids'), $request_body['item_ids']));
     $buffer = new Jetpack_Sync_Queue_Buffer($request_body['buffer_id'], $request_body['item_ids']);
     $queue = new Jetpack_Sync_Queue($queue_name);
     $response = $queue->close($buffer, $request_body['item_ids']);
     if (is_wp_error($response)) {
         return $response;
     }
     return array('success' => $response);
 }