Hakkan worked on the JetBrains/intellij-sdk-docs repository, focusing on documenting changes to the JSON Plugin API. Over the course of a month, Hakkan updated the documentation to reflect the removal of the createParser method and the introduction of a new JSON parser instantiation approach. Using Markdown and leveraging skills in API design and technical writing, Hakkan provided clear migration guidance and clarified change descriptions to improve accuracy. The work aimed to reduce developer friction and support plugin authors in transitioning to the updated API, demonstrating a thorough approach to aligning documentation with evolving code and onboarding needs.