Samuel Hyyppä contributed to the eProsima/Fast-DDS-Gen repository by stabilizing its code generation workflow, focusing on template engine reliability in Java. He addressed a critical issue in the XTypesTypeObjectSource.stg template, correcting a typo in the applied_verbatim_annotation section to ensure accurate built-in type annotations during template generation. This targeted fix improved the reliability of generated TypeObject sources for XTypes, reducing downstream debugging for users who rely on automated code generation. Samuel’s work demonstrated a strong grasp of code generation and template engines, delivering a precise, repository-level solution that enhanced the stability and developer experience for the project’s user base.