nySetTheme method
Change the current theme.
themeId - The ID of the theme to set.
remember - If true, sets this theme as the preferred theme for its type
(light or dark). This is used when following system theme to
remember which theme variant the user prefers.
Implementation
Future<void> nySetTheme(String themeId, {bool remember = false}) async {
await NyThemeManager.instance.setTheme(themeId, remember: remember);
}