The writeAsJSON virtual method of the DynamicObject class requires an additional parameter, maximumDecimalPlaces, to specify the maximum precision of floating point numbers.
Classes which inherit from DynamicObject and override this method will need to update their method signature.
Your custom DynamicObject class can choose to ignore the additional parameter if you don’t wish to support this behaviour.
When serialising the results of calculations to JSON the rounding of floating point numbers can result in numbers with 17 significant figures where only a few are required. This change to DynamicObject is required to support truncating those numbers.