Noé Tarbouriech refactored the Otelmux example in the open-telemetry/opentelemetry-go-contrib repository, focusing on improving its testability and maintainability. By restructuring the example into a more modular and testable format, Noé enabled deterministic testing and laid the foundation for future test automation. The work involved updating Go module metadata, cleaning up deprecated files, and ensuring the go.mod and go.sum reflected the new layout. Using Go and leveraging skills in Go Modules, refactoring, and testing, Noé’s changes addressed issue #7121, enhancing the reliability of continuous integration workflows and making the example more accessible for future contributors and automated tests.