Toggle Handler

public abstract class ToggleHandler : IHandler {
    public bool Value { get; }
    public void SetValue(bool value, bool notify = true);
    protected void SetLabelKey(string key);
    protected abstract void OnValueChanged(bool value);
}

public class MyToggle : ToggleHandler {
    public MyToggle() {
        var cfg = Config.Load();
        SetValue(cfg.Get(new[] { "settings", "my-mod", "enabled" }, true), notify: false);
        SetLabelKey("settings.entry.my_mod.general.enabled.label");
    }

    public override string[] GetPath()
        => new[] { "my-mod", "general", "enabled" };

    protected override GameObject GetPrefab()
        => Main.CoreAPI.AssetAPI.GetAsset<GameObject>("settings:prefabs/toggle.prefab");

    protected override void OnValueChanged(bool value)
        => Config.Load().Set(new[] { "settings", "my-mod", "enabled" }, value).Save();
}