public static string WorkspaceItemIcon(this WorkspaceItemKindEnum kind)
        {
            switch (kind)
            {
            case WorkspaceItemKindEnum.InputStream: return("oi oi-align-left");

            case WorkspaceItemKindEnum.RootFolder: return("oi oi-home");

            case WorkspaceItemKindEnum.Folder: return("oi oi-folder");

            case WorkspaceItemKindEnum.File: return("oi oi-file");

            case WorkspaceItemKindEnum.Favorite: return("oi oi-book");

            default: throw new InvalidOperationException($"Unknown WorkspaceItemKindEnum value: {kind}");
            }
        }
 public WorkspaceItemModel(Guid key, WorkspaceItemKindEnum kind, string title)
 {
     Key   = key;
     Kind  = kind;
     Title = title;
 }