transaction
fun ServiceHub.transaction(notary: Party = TestIdentity.fresh("transaction notary").party, script: TransactionDSL<TransactionDSLInterpreter>.() -> EnforceVerifyOrFail): LedgerDSL<TestTransactionDSLInterpreter, TestLedgerDSLInterpreter>
Creates a ledger with a single transaction, built by the passed in dsl.