@using Umbraco.Cms.Core.Services
@inherits Umbraco.Cms.Web.Common.Views.UmbracoViewPage
@inject IDataTypeContainerService DataTypeContainerService;
@{
	Layout = null;

    var x = await DataTypeContainerService.GetAllAsync(); // returns all three
    var y = await DataTypeContainerService.GetAsync("Subfolder", 1); // Returns only the subfolder in the root
    var z = await DataTypeContainerService.GetAsync("Subfolder", 2); // Returns only the subfolder under folder
}