/// <summary>
/// Deletes a given folder from the file system.
/// </summary>
/// <param name="virtualFolderPath">The qualified path of the folder to be created.</param>
/// <exception cref="ArgumentNullException">If <paramref name="virtualFolderPath"/>
/// is a null reference.</exception>
/// <exception cref="ResourceAccessException">In case of invalid or prohibited
/// resource access.</exception>
/// <exception cref="VirtualResourceNotFoundException">If the
/// folder does not exist.</exception>
public override void DeleteFolder(string virtualFolderPath)
{
SecureAction(FileSystemTask.FolderDeleteRequest,
() => OperationService.DeleteFolder(virtualFolderPath),
() => String.Format("Could not delete folder [{0}] from file system.", virtualFolderPath));
}