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So far, there is nothing (afaik). If often happens (at least for me) that you have several NodeHandels in a single Node. I have one for the global namespace and one local ( NodeHandle("~") ) so that it's a bit easier to see where a parameter comes from.

But the concept of a node lifecycle will probably end up in ROS 2:

https://github.com/gbiggs/design/commit/7aa6d337cdb66d51f7f29a4802bd635fa365adae