Worked on the Samsung/TizenFX repository to enhance the accuracy of code coverage metrics by integrating the ExcludeFromCodeCoverage attribute into the Tizen.Pims.Calendar and Tizen.PhonenumberUtils namespaces. This backend development effort in C# focused on marking untestable code, ensuring that coverage reports more accurately reflected actual testable code and did not misrepresent quality metrics. The approach consolidated coverage exclusion practices across namespaces, supporting consistent and reliable reporting for the project. By refining how code coverage was measured, the work enabled clearer assessment of testing efforts and code quality, contributing to more maintainable and transparent backend development processes within the C# ecosystem.