public static void SetGlobalProperty(this IVsBuildPropertyStorage propertyStorage, string propertyName, bool value, bool defaultValue)
 {
     propertyStorage.SetGlobalProperty(propertyName,
                                       value.ToString(CultureInfo.InvariantCulture).ToLowerInvariant(),
                                       defaultValue.ToString(CultureInfo.InvariantCulture).ToLowerInvariant());
 }