Worked on enhancing PHP 8.1 compatibility for the googleapis/google-cloud-php repository by addressing a key deprecation issue. Focused on backend development using PHP, the developer implemented a targeted patch that introduced the ReturnTypeWillChange attribute to getIterator methods across several classes. This approach minimized changes to the public API surface while ensuring the library remained stable and upgrade-ready for users transitioning to PHP 8.1. By reducing deprecation warnings and runtime compatibility issues, the work improved the overall reliability of the codebase. The contribution demonstrates careful attention to backward compatibility and a methodical approach to maintaining open source libraries.