public static void PrepareUpgrade(IInstall instance)
{
var settingsPath = Path.Combine(instance.GetLocation(), "settings.json");
byte[] settingsData = null;
if (File.Exists(settingsPath))
settingsData = File.ReadAllBytes(settingsPath);
instance.Uninstall();
Directory.CreateDirectory(instance.GetLocation());
if (settingsData != null)
File.WriteAllBytes(settingsPath, settingsData);
}