The output of an adapter

I’m trying to name a function in a software package. Let’s start with some backgrounds. The package provides supplemental functions to multiple upstream packages that train random forests. To avoid duplicated code, I use a function A to convert random forest objects from different upstream vendors into an intermediate object, and then have other functions B1, B2, … operate on it. The name for Bs have been decided, i.e. featureContrib, trainsetBias. However, I’m struggling to give A a good name.

I have come up with intermediateRF/transtionalRF/transtionRF (“RF” is a widely understood abbr. for “random forest”, but them fail to capture A‘s functionality to take objects of different types, and then convert them to something of a common structure. I would like to emphasis its Polymorphism nature in the name.

Other candidates include middlewareRF/adapterRF, but it seems to implies the resultant object is itself a middleware/adapter that can act on something else, instead of the output of a middleware/adapter. If I were to use this name, then Bs need to be featureContribCalculator and trainsetBiasCalculator for consistency, which would be too verbose.

To sum up, what do you call the output of a middleware/adapter that takes different objects, and then convert them to intermediate objects with the same structure? It’s fine to answer with a phrase, but please keep it no longer than 15 characters.