Dominik Huber enhanced the Guardsquare/proguard-core repository by developing a dedicated getter, getUncompressedSize(), for the ZipFileDataEntry class. This Java-based feature replaced the previous getSize() method, which only provided an approximate value, with a solution that returns the exact uncompressed size of zip entries. By focusing on API clarity and backward compatibility, Dominik’s work improved the accuracy of zip file handling and enabled more precise resource planning and analytics for downstream processes. The implementation leveraged Java development skills and a strong understanding of API design, delivering a targeted improvement that addressed a specific need in zip asset management.