SMAPI Content API

            // The content API isn't technically public yet, so this is how you use it.
            // It will be much cleaner once SMAPI 2.0 is released.
            var editors = ((IList<IAssetEditor>)helper.Content.GetType().GetProperty("AssetEditors", BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance).GetValue(Helper.Content));
            editors.Add(new ContentInjector());


    public class ContentInjector : IAssetEditor
    {
        public bool CanEdit<T>(IAssetInfo asset)
        {
            if (asset.AssetNameEquals("Data\\ObjectInformation"))
                return true;
            return false;
        }

        public void Edit<T>(IAssetData asset)
        {
            if (asset.AssetNameEquals("Data\\ObjectInformation"))
            {
                var data = asset.AsDictionary<int, string>().Data;
                // your changes here
            }
        }
    }