Worked on the prometheus/common repository to enhance API usability by improving documentation for the TextParser component. Focused on clarifying initialization rules, the update required that all TextParser instances be created using the NewTextParser function, explicitly disallowing zero-value usage to prevent common runtime errors. This documentation-driven approach, implemented in Go, provided clear usage guidance and updated examples, making the API safer and more reliable for downstream consumers. By establishing stricter initialization patterns, the work laid a foundation for future improvements and more consistent usage across the codebase, demonstrating attention to detail and a strong emphasis on developer experience and reliability.