Roman Ivshin developed a new feature for the Ecwid/ecwid-java-api-client repository, focusing on enhancing reporting analytics by introducing the cartOrigin parameter to report responses. Working primarily with Kotlin and leveraging API development skills, Roman designed and integrated this addition to provide detailed cart origin data, supporting improved attribution and analytics for marketing and product teams. The implementation maintained backward compatibility and was carefully integrated into the existing Java API client structure using a disciplined Git-based workflow. While the work was limited in scope to a single feature over one month, it demonstrated a clear, maintainable approach to extending reporting functionality.