During July 2025, Gustavo Broto focused on enhancing type safety within the genexuslabs/JavaClasses repository by addressing a bug in the GXExternalCollection class. He introduced a generic parameter to the getExternalInstance method, enabling it to return a strongly typed ArrayList and thereby eliminating unchecked cast warnings. This change, implemented in Java using advanced generics and software engineering principles, reduced the risk of ClassCastException and improved runtime safety for developers retrieving external instances. Gustavo’s work strengthened the reliability and maintainability of the API, reflecting a thoughtful approach to technical debt reduction and a deep understanding of type safety in Java.