Feature to show deprecation warning on using ROS message

[wkentaro]

Is there way to achieve this? I have some ROS messages which are migrated to other package and deprecated.

I have a plan to add this feature to genpy and gencpp, to show deprecation warning on being included in a node.

[dirk-thomas]

There is currently no such functionality.

The question would be when and how should the deprecation warning be shown.