Make an existing class's incompatible interface work with the interface client code expects, without modifying the original class.
OldLogger only has logMessage(msg) returning 'OLD:' + msg. The rest of the app expects a Logger with info(msg) returning 'INFO:' + msg.
Implement `LoggerAdapter`, wrapping an OldLogger to satisfy the Logger interface.
solve(messages) logs each message through the adapter and returns the results.
Sample tests