MenuItem

MenuItem item = new MenuItem("Disabled Item Text", "An item description, that supports ~r~color codes~s~.");

// Disable the item
item.Enabled = false;

// Set the left item icon to the 'lock' icon.
item.LeftIcon = MenuItem.Icon.LOCK;

// Add a menu item to a menu:
menu.AddMenuItem(item);

menu.AddMenuItem(new MenuItem("Buy vehicle", "Costs $1000.")
{
    Label = "$1000",
    LeftIcon = MenuItem.Icon.CAR,
    RightIcon = MenuItem.Icon.CASH
});

MenuItem button = new MenuItem("Fix vehicle", "Repairs the vehicle you're in.");
menu.AddMenuItem(button);

menu.OnItemSelect += (_menu, _item, _index) =>
{
    if (_item == button)
    {
        SetVehicleFixed(GetVehiclePedIsIn(PlayerPedId(), false));
    }
};

Menu submenu = new Menu("Vehicle options");

MenuItem submenuButton = new MenuItem("Vehicle options", "Open the vehicle options.")
{
    Label = "→→→"
};
menu.AddMenuItem(submenuButton);

MenuController.BindMenuItem(menu, submenu, submenuButton);

foreach (var vehicle in vehicles)
{
    menu.AddMenuItem(new MenuItem(vehicle.DisplayName, $"Spawn a {vehicle.DisplayName}.")
    {
        ItemData = vehicle
    });
}

menu.OnItemSelect += (_menu, _item, _index) =>
{
    if (_item.ItemData != null)
    {
        SpawnVehicle(_item.ItemData.Model);
    }
};

// An anonymous object.
item.ItemData = new { category = "vehicles", price = 1000 };

// Then filter on it.
menu.FilterMenuItems(i => i.ItemData?.category == "vehicles");

MenuItem item = new MenuItem(
    "~b~Important~s~ button",
    "This description has a ~r~red~s~ word in it, and~n~a second line."
);