ThemeManager.init constructor
ThemeManager.init({
- ColorTheme? persistedTheme,
Implementation
factory ThemeManager.init({ColorTheme? persistedTheme}) {
_sharedInstance ??= ThemeManager._(
persistedTheme: persistedTheme ?? ColorThemes.mdsStandardTheme);
// since you are sure you will return non-null value, add '!' operator
return _sharedInstance!;
}