Adds a button to the debug panel to dump the resulting xml into console.

AddDebugActions.cs

using System;
using Verse;
using Harmony;
using System.Xml;
using System.IO;

namespace DebugActions
{
    class DebugActions : Mod
    {
        public DebugActions(ModContentPack content) : base(content)
        {
            HarmonyInstance.Create("rimworld.debugactions").PatchAll();
        }
    }

    [HarmonyPatch (typeof(LoadedModManager), "CombineIntoUnifiedXML")]
    internal static class SaveXML
    {
        public static XmlDocument instance;

        static void Postfix(XmlDocument __result)
        {
            if (instance == null) instance = __result;
        }
    }

    [HarmonyPatch (typeof(Dialog_DebugActionsMenu), "DoListingItems_Entry")]
    static class AddDebugActions
    {
        static void Prefix(Dialog_DebugActionsMenu __instance)
        {
            var menu = __instance;

            menu.DoLabel("XML");
            menu.DebugAction("Dump", delegate {
                StringWriter sw = new StringWriter();
                SaveXML.instance.Save(sw);
                string formattedXml = sw.ToString();

                Log.Message(formattedXml);
            });
        }
    }
}