remove .empty about fluentstorage HOT 1 CLOSED

		/// <summary>
		/// Creates a new folder in this storage. If storage supports hierarchy, the folder is created as is, otherwise a folder is created by putting a dummy zero size file in that folder.
		/// </summary>
		/// <param name="blobStorage"></param>
		/// <param name="folderPath">Path to the folder</param>
		/// <param name="dummyFileName">If storage doesn't support hierary, you can override the dummy file name created in that empty folder.</param>
		/// <param name="cancellationToken"></param>
		/// <returns></returns>
		public static async Task CreateFolderAsync(
		   this IBlobStorage blobStorage, string folderPath, string dummyFileName = null, CancellationToken cancellationToken = default) {
			if (blobStorage is IHierarchicalBlobStorage hierarchicalBlobStorage) {
				await hierarchicalBlobStorage.CreateFolderAsync(folderPath, cancellationToken).ConfigureAwait(false);
			}
			else {
				string fullPath = StoragePath.Combine(folderPath, dummyFileName ?? ".empty");

				// Check if the file already exists before we try to create it to prevent 
				// AccessDenied exceptions if two processes are creating the folder at the same time.
				if (await blobStorage.ExistsAsync(fullPath)) {
					return;
				}

				await blobStorage.WriteTextAsync(
				   fullPath,
				   "created as a workaround by FluentStorage when creating an empty parent folder",
				   null,
				   cancellationToken).ConfigureAwait(false);
			}
		}