Member rclcpp::Node::list_parameters (const std::vector< std::string > &prefixes, uint64_t depth) const: : properly document and test this method.
Member rclcpp::NodeOptions::parameter_event_publisher_options (const rclcpp::PublisherOptionsBase &parameter_event_publisher_options): (wjwwood): make this take/store an instance of rclcpp::PublisherOptionsWithAllocator<Allocator>, but to do that requires NodeOptions to also be templated based on the Allocator type.