The current docstrings for get_rmw_qos_profile() don't provide any more information than the obvious. How to make them better? I know next to nothing about middlewares, but I'm happy to submit improvements if they are welcome.

(my) Motivation: I was going through the tutorial on Approximate Time Synchronizer and noticed these lines:

  rclcpp::QoS qos = rclcpp::QoS(10);
  temp_pub = this->create_publisher<sensor_msgs::msg::Temperature>("temp", qos);
  fluid_pub = this->create_publisher<sensor_msgs::msg::FluidPressure>("fluid", qos);

  temp_sub.subscribe(this, "temp", qos.get_rmw_qos_profile());
  fluid_sub.subscribe(this, "fluid", qos.get_rmw_qos_profile());

I wanted to find out more on get_rmw_qos_profile and found the docstring not telling me much. The documentation is not more informative either.