EventBus &get_event_bus() { return event_bus; }
EventSource &get_event_source() { return event_source; }
const std::vector<std::unique_ptr<Stage>> &get_stages() const { return stages; }
EventBus &get_event_bus() { return event_bus; }
EventSource &get_event_source() { return event_source; }
const std::vector<std::unique_ptr<Stage>> &get_stages() const { return stages; }