wabbajack/Wabbajack.DTOs/DownloadStates/ADownloadState.cs

using System.Collections.Generic;
using System.Linq;

namespace Wabbajack.DTOs.DownloadStates
{
    public abstract class ADownloadState : IDownloadState
    {
        public abstract string TypeName { get; }
        public abstract object[] PrimaryKey { get; }

        public string PrimaryKeyString
        {
            get
            {
                var pk = new List<object>();
                pk.Add(TypeName);
                pk.AddRange(PrimaryKey);
                var pk_str = string.Join("|", pk.Select(p => p.ToString()));
                return pk_str;
            }
        }
    }
}