send abstract method
Send request and return a GatewayHandoffResponse.
Throws GatewayError for any transport-level failure.
Implementation
Future<GatewayHandoffResponse> send(GatewayTransactionRequest request);
Send request and return a GatewayHandoffResponse.
Throws GatewayError for any transport-level failure.
Future<GatewayHandoffResponse> send(GatewayTransactionRequest request);