An alternative to Combine Functions into Transform is Combine Functions into Class (144) that moves the logic into methods on a class formed from the source data. Either of these refactorings are helpful, and my choice will often depend on the style of programming already in the software. But there is one important difference: Using a class is much better if the source data gets updated within the code. Using a transform stores derived data in the new record, so if the source data changes, I will run into inconsistencies.
