change node name by updating parameter

[tagosaku]

hi, I am looking for a way to change a node name automatically by parameter change.

For instance, there is a fetch node. When connecting file cache node into source parameter, I want to change fetch's name to the file node's name. To do it, at first, I am trying to use python events. However, any events don't trigger setName code. 

Thus, I'd like to know how to use these python events, and know how to change node name by parameter change/update.

Thanks!