/// <summary>
/// Sets the expiry time for the file.
/// </summary>
/// <param name="path">Path of file or directory</param>
/// <param name="eopt">Expiry option</param>
/// <param name="expiryTime">Expiry time</param>
/// <param name="cancelToken">Cancellation token</param>
public override void SetExpiryTime(string path, ExpiryOption eopt, long expiryTime,
CancellationToken cancelToken = default(CancellationToken))
{
SetExpiryTimeAsync(path, eopt, expiryTime, cancelToken).GetAwaiter().GetResult();
}
