How to filter record from a model into RavenDB using C#?

Let's say we have a model as under

public class RSS
    {
        public string Id { get; set; }
        public string QuestionID { get; set; }
        public string QuestionTitle { get; set; }
        public string QuestionDescription { get; set; }
        public DateTime PublishDate { get; set; }
    }

The below piece of code will filter data

public List<RSS> ReadRssFeed(IEnumerable<string> lstIDs)
        {
            var rssCollection = new List<RSS>();
            using (var ds = new DocumentStore
            {
                Url = "http://localhost:8080",
                DefaultDatabase = "CRUDDemo"
            }.Initialize())
            using (var session = ds.OpenSession())
            {
                //Find records whose question title starts with "NAudio"
                 session
                 .Query<RSS>()
                 .Where(rss=>rss.QuestionTitle.StartsWith("NAudio"))
                 .ToList()
                 .ForEach((e) => rssCollection.Add(e));
            }
            return rssCollection;
        }