Builder Pattern and Inheritance

Question

I have an object hierarchy that increases in complexity as the inheritance tree deepens. None of these are abstract, hence, all of their instances serve a, more or less soph

Answer 1

The following IEEE conference contribution Refined Fluent Builder in Java gives a comprehensive solution to the problem.

It dissects the original question into two sub-problems of inheritance deficiency and quasi invariance and shows how a solution to these two sub-problems opens for inheritance support with code reuse in the classical builder pattern in Java.