During March 2026, Khm052678 contributed to the apache/pulsar repository by improving code quality in core messaging components. Focusing on the Producer and Message classes, Khm052678 corrected typos to enhance code readability and maintainability, which helps reduce ambiguity in API usage for both current and future contributors. The work was implemented using Java and leveraged backend and API development skills to ensure adherence to project quality standards. While the scope was limited to a single feature and did not involve bug fixes, these targeted improvements support smoother onboarding, lower support overhead, and facilitate future development within the Pulsar codebase.