/// <summary>
/// Add a <paramref name="command"/> with the specified <paramref name="order"/>.
/// </summary>
/// <param name="command">Command to add.</param>
/// <param name="order">Order to add it at.</param>
public void Add(Command command, int order = -1)
{
var item = command.CreateToolItem();
item.Order = order;
Add(item);
}
