public Library_V3           Library(string nameOrId)
        {
            var library = (nameOrId.isGuid())
                              ? TmWebServices.GetLibraryById(nameOrId.guid()).libraryV3()
                              : TmWebServices.GetLibraryByName(nameOrId).libraryV3();

            return((library.notNull())
                       ? TmWebServices.GetFolderStructure_Library(library.libraryId)
                       : null);
        }