UndeclaredEventException
class UndeclaredEventException(val type: AggregateType, val command: Class<*>, val event: Class<*>, message: String) : RuntimeException
A command's handling produced an event its function does not declare: a decide function or an after hook of the model of type produced event for command, outside the events its return type yields or its produces lists, or a lifecycle command's decide function another lifecycle event than its own. A bug in the model, not an outcome of the command: the command fails (wow.command.undeclared-event) and commits nothing.