public Task SendAsync(
string destination,
byte[] content = null,
string contentType = MediaTypeNames.ApplicationOctet,
bool useReceipt = false,
IEnumerable <KeyValuePair <string, string> > extraHeaders = null,
CancellationToken?cancellationToken = null)
{
return(Client.WriteSendAsync(
destination,
content,
contentType,
useReceipt ? Client.GetNextReceiptId() : null,
TransactionId,
extraHeaders,
cancellationToken));
}