How do you properly implement API versioning support within your app, ensuring your Flutter client genuinely continues working correctly even as your backend API itself continues to evolve and change over time?

API versioning typically involves your backend exposing several separate distinct versions of a given endpoint, commonly identified either through the actual URL path itself, such as slash v2 slash orders, or through a specific custom request header, and your app's own networking layer should genuinely be properly configured to consistently target one particular specific known version, letting your backend team safely introduce genuinely breaking changes within a brand new version while still continuing to properly and reliably support your existing already released app that continues depending on that particular previous older version until it is eventually genuinely fully retired.

final dio = Dio(BaseOptions(baseUrl: 'https://api.example.com/v2'));