Get all media content items in a folder

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Telerik.Sitefinity.Libraries.Model;
using Telerik.Sitefinity.Modules.Libraries;

namespace Telerik.Sitefinity.Documentation.CodeSnippets.DevGuide.SitefinityEssentials.Modules.MediaModules.Folders.ManagingFolders
{
    public partial class FoldersSnippets
    {
        public static IQueryable<MediaContent> GetDescendants()
        {
            //gets an isntance of the LibrariesManager
            var manager = LibrariesManager.GetManager();

            //creates an image album
            var imagesAlbum = manager.CreateAlbum();
            imagesAlbum.Title = "ImageAlbumTitle1";
            manager.SaveChanges();

            //creates a folder under the album
            var folder = manager.CreateFolder(imagesAlbum);
            var folderId = folder.Id;
            folder.Title = "FolderTitle";
            manager.SaveChanges();

            //creates an image in the album and assigns the folder to the image 
            //by using the FolderId property
            var image = manager.CreateImage();
            image.Title = "imageTitle";
            image.FolderId = folderId;
            manager.SaveChanges();

            //creates another folder under the album
            var folder1 = manager.CreateFolder(imagesAlbum);
            folder1.Title = "ChildFolderTitle1";

            //changes the folder of the image
            manager.ChangeItemFolder(image, folder1);

            //gets all the ancestors of the album
            var ancestors = manager.GetDescendants(imagesAlbum);
            return ancestors;
        }
    }
}