We dont have such an example. As I said, what tends to happen after awhile, is that a new separate module emearges, just for dealing with treegrid on the back-end. All handlers for even the simplest of use-cases, are then refactored into using this module, in order to avoid code-duplications. This is te professional way of coding. At the same time this means that extracting some functions from this tightly-coupled arrangement becomes anywhere from difficult to impossible, and all disjointed use-cases tend to disappear.
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