status property
Current status of the OutboundTransfer: processing, failed, canceled, posted, returned. An OutboundTransfer is processing if it has been created and is pending. The status changes to posted once the OutboundTransfer has been "confirmed" and funds have left the account, or to failed or canceled. If an OutboundTransfer fails to arrive at its destination, its status will change to returned.
Implementation
OutboundTransferStatus? status;