private void SaveDefault()
    {
        List <string> jsonList = new List <string>();

        foreach (TerrainLayer layer in _editLayers)
        {
            jsonList.Add(JsonUtility.ToJson(layer));
        }

        try
        {
            File.WriteAllLines(LayerSerializer.DefaultJSONPath, jsonList);
        }
        catch (Exception e)
        {
        }

        TerrainEditor window = (TerrainEditor)GetWindow(typeof(TerrainEditor));

        window.Show();
        window.UpdateTerrainPreview();
    }