toSingleStrict
fun AsyncTerminalMethods.toSingleStrict(vararg params: Pair<String, Any?>, onResult: (DataResult<Map<String, Any?>>) -> Unit): Job
fun StepBuilderMethods.toSingleStrict(vararg params: Pair<String, Any?>): TransactionStep<Map<String, Any?>>
fun TerminalReturningMethods.toSingleStrict(vararg params: Pair<String, Any?>): DataResult<Map<String, Any?>>