/// <summary>
/// Aborts a currently managed resource transfer.
/// </summary>
/// <param name="transferId">Identifies the transfer and resource.</param>
/// <param name="reason">The reason to cancel the transfer.</param>
/// <returns>The new status of the transfer, which is <see cref="TransferStatus.Aborted"/>
/// in case of a known transfer. If the transfer is not known (maybe because it was aborted
/// by the system), this method returns <see cref="TransferStatus.UnknownTransfer"/>.</returns>
/// <exception cref="UnknownTransferException">In case the <paramref name="transferId"/>
/// does not refer to an active transfer.</exception>
protected override TransferStatus CancelTransferImpl(string transferId, AbortReason reason)
{
return(ReaderService.CancelTransfer(transferId, reason));
}