During December 2025, Yas Shimizu enhanced the mariadb-corporation/mariadb-docs repository by documenting the deprecation of mysql_thread_init and mysql_thread_end, focusing on guiding developers through upcoming API changes. Using Markdown and technical writing skills, Yas authored clear migration warnings and deprecation notices to help users avoid memory leaks and transition to safer alternatives. The documentation updates included detailed versioning and change history, supporting long-term maintainability and future compatibility. Although the work centered on a single feature, the depth of guidance provided improved user understanding and supportability, reflecting a thoughtful approach to documentation and developer communication within the MariaDB ecosystem.