Implement missing matcher group method - Matcher#group(String name)

The Matcher seems to be missing the `group(String name)` method, I am getting the following error;

```
[ERROR] Method java.util.regex.Matcher.group(Ljava/lang/String;)Ljava/lang/String; was not found
```

https://docs.oracle.com/en/java/javase/24/docs/api/java.base/java/util/regex/Matcher.html#group(java.lang.String)