from indico.queries import UpdateSubmission
from indico.types import Submission

submission_id: int = 1
  
submission: Submission = client.call(UpdateSubmission(submission_id, retrieved=True))

// Call MarkSubmissionAsRetrieved will update the submission and set retrieved to True
using System;
using System.IO;
using System.Threading.Tasks;
using IndicoV2;

namespace Examples
{
    public class MarkSubmissionAsRetrieved
    {
        private static string GetToken() =>
            File.ReadAllText(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile),
                "indico_api_token.txt"));

        public static async Task Main()
        {
            var client = new IndicoClient(GetToken(), new Uri("https://mycluster.indico.io"));

            var submissionClient = client.Submissions();

            var submissionId = 1;

            var submission = await submissionClient.MarkSubmissionAsRetrieved(submissionId);
            Console.WriteLine(submission.Id);
        }
    }
}

package com.indico;

import com.indico.entity.Submission;

import com.indico.mutation.UpdateSubmission;

public class main {

    public IndicoClient client;
    private static String token_path = "./indico_api_token.txt";
    private static String host  =  "mycluster.indico.io"
    private static Integer submission_id = 1;

    public static void main(String args[]) throws Exception {

        
        IndicoConfig config = new IndicoConfig.Builder().host(host)
                .protocol("https")
                .tokenPath(token_path)
                .build();
        client = new IndicoKtorClient(config);

        client.updateSubmission().submissionId(submission_id).retrieved(true).execute();

        System.exit(0);
    }
}