❔ Settings model as a singleton in WPF

    internal sealed class SettingsModel
    {
        private static SettingsModel _instance;

        public static SettingsModel Instance
        {
            get
            {
                _instance ??= new SettingsModel();
                return _instance;
            }
        }

        private SettingsModel()
        {
        }

        [JsonPropertyName("FontSize")]
        public int FontSize { get; set; }

        [JsonPropertyName("FontFamily")]
        public FontFamily FontFamily { get; set; }

        }