Worked on modernizing radio button implementations in the flutter/packages repository by delivering a cross-package RadioGroup API migration. The approach involved replacing deprecated groupValue and onChanged properties on individual Radio widgets with a centralized RadioGroup ancestor, streamlining selection state management across multiple example applications. This migration addressed deprecation warnings, reduced boilerplate, and improved consistency for developers adopting the new API. The work required expertise in Dart and Flutter development, with a focus on API migration and code refactoring. No bugs were fixed during this period, as the primary contribution centered on feature delivery and updating existing code to current standards.