.swift

 self.drop.get("/driving-records/:drivingLicenseNumber") { request in
            
            guard let drivingLicenseNumber = request.parameters["drivingLicenseNumber"]?.string else {
                return try JSONEncoder().encode(["message":"drivingLicenseNumber parameter not found!"])
            }
            
            let blockchain = self.blockchainService.blockchain
            let transactions = blockchain?.transactionsBy(drivingLicenseNumber: drivingLicenseNumber)
            return try JSONEncoder().encode(transactions)
        }