Andrey Kaygorodov focused on updating documentation within the githubnext/discovery-agent__apache__flink repository to reflect changes introduced in the Flink 2.0-preview API. He revised Java code samples for FixedSizeSplitFetcherManager and FixedFetcherSizeSourceReader, ensuring that constructors now accept a Configuration object and that initialization aligns with the new API structure. By addressing these updates, Andrey resolved a key documentation bug, reducing confusion for developers integrating with the evolving Flink API. His work centered on API updates and technical documentation, improving onboarding and minimizing the risk of API misuse. The contribution demonstrated careful attention to evolving platform requirements.