PlainElastic.Net QueryBuilder with Sort and ignore_unmapped parameter

gistfile1.cs

SearchResult<Tweet> searchResult = client.Search(
        new SearchCommand("twitter", "tweet"),
        new QueryBuilder<Tweet>()
          .Query(q => q
              .Term(t => t
                  .Field(tweet => tweet.User)
                  .Value("testUser")
                  .Boost(2)
              )
          )
          .Sort(s=>s
              .Field(t=>t.Message, order: SortDirection.asc, ignoreUnmapped: true)
               )
);