Method config

examples/flow/iota.cpp:13–16

struct config : caf::actor_system_config {
  config() {
    opt_group{custom_options_, "global"} //
      .add<size_t>("num-values,n", "number of values produced by the source");
  }

  caf::settings dump_content() const override {
    auto result = actor_system_config::dump_content();