During April 2025, Lang focused on enhancing the openfga/sdk-generator repository by implementing dynamic OAuth2 client integration. He developed a method to parse issuer URLs and construct token endpoints dynamically, addressing the challenge of supporting diverse issuer formats in authentication flows. Using Python and Mustache, Lang ensured the solution was robust by adding comprehensive unit tests that validated token endpoint resolution across multiple configurations. His work improved the maintainability and reliability of backend OAuth2 integrations, reducing the risk of misconfiguration. The project demonstrated depth in API integration and backend development, with careful attention to test coverage and codebase clarity.