Attempt to write a multi statement ad-hoc query in C#

first-cut.xcc.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Marklogic.Xcc;
using Marklogic.Xcc.Exceptions;

namespace ConsoleApplication1
{
    class Program
    {

        private const string Host = "localhost";
        private const int Port = 8000;
        private const string Login = "admin";
        private const string Password = "admin";
     
        static void Main(string[] args)
        {                        
            var contentSource = ContentSourceFactory.NewContentSource(
                Host,
                Port,
                Login,
                Password);

            var session = contentSource.NewSession();

            string query =
@"xquery version '1.0-ml';

declare option xdmp:transaction-mode 'update';

text {'TransactionMode: ', xdmp:get-transaction-mode()},
text {'Timestamp at start of transaction: ', xdmp:transaction()},
xdmp:document-delete('/1.xml');
xdmp:document-insert('/2.xml', <data/>);
text {'Timestamp before commit: ', xdmp:transaction()},
xdmp:commit(), 'one doc deleted and new doc created';
text {'Timestamp after commit - to see this doc your query needs a timestamp that is here or later: ', xdmp:transaction()}
";
            
            var request = session.NewAdhocQuery(query);
            try
            {
                ResultSequence rs = session.SubmitRequest(request);
                ResultItem item;

                while ((item = rs.Next()) != null)
                {
                    var data = item.AsString();
                    Console.WriteLine(data);                    
                }
                rs.Close();
                
            }
            catch (XQueryException e)
            {
                Console.WriteLine("Exception caught: " + e.FormatString);
            }
            
            session.Close();

            Console.WriteLine("Any key to exit");
            var name = Console.ReadLine();
        }
    }
}

Additional information: The type initializer for 'com.marklogic.xcc.ContentSourceFactory' threw an exception. Any help