public static GuiComposer AddFlatList(this GuiComposer composer, ElementBounds bounds, Action <int> onleftClick = null, List <IFlatListItem> stacks = null, string key = null)
{
if (!composer.Composed)
{
composer.AddInteractiveElement(new GuiElementFlatList(composer.Api, bounds, onleftClick, stacks), key);
}
return(composer);
}