Worked on the junit-team/junit5 repository to deliver an API extension that allows custom test engines to access the associated TestDescriptor through the TestTask interface. This feature was implemented in Java with a focus on robust API design, ensuring that NodeTestTask provides the new capability while maintaining backward compatibility. The approach included introducing a default method in the interface that throws an UnsupportedOperationException when not implemented, providing a safe fallback for existing integrations. The work emphasized stability and extensibility, enabling richer plugin ecosystems and smoother engine integration for developers working with custom test engines in the Java testing framework.