Extending and overriding Flows - Overriding a base Responder Flow

OverrdingResponder.kt

@InitiatedBy(SendMessageFlow::class)
class OverridingResponder(private val session: FlowSession) :
  FlowLogic<Unit>() {

  @Suspendable
  override fun call() {
    val stx = subFlow(object : SignTransactionFlow(session) {
      override fun checkTransaction(stx: SignedTransaction) {}
    })
    logger.info("Screw the original responder. I'll build my own responder... with blackjack and hookers!")
    subFlow(
      ReceiveFinalityFlow(
        otherSideSession = session,
        expectedTxId = stx.id
      )
    )
  }
}