problemOf
fun problemOf(code: String, message: String, result: CommandResult? = null, cause: Throwable? = null): WowProblemException
The exception of a request a boundary did not carry out for the framework code, said as message: its status, retry and Retry-After as ALL declares them, a code it does not list a 500 no retry gets past. Each boundary (the in-process clients and queries, a client's transport) maps its own failures with it, once.