During January 2026, Lee Do contributed to the pinpoint-apm/pinpoint repository by enhancing the ASMClassWriter component’s logging behavior. Lee addressed a compilation issue in Java by correcting a missing parenthesis in a logger.debug statement, ensuring error-free builds. Additionally, Lee improved logging management by lowering the log level for missing classes from WARN to DEBUG, which reduced unnecessary log noise and streamlined observability. These changes, implemented through targeted debugging and adherence to logging best practices, increased the maintainability and stability of the core instrumentation. Lee’s work demonstrated proficiency in Java and logging management, focusing on practical improvements for production systems.