
fixes `first` and `second` deprecation in Tuple2<String, String> and replace their usage with `v1` and `v2` respectively. (v1,v2 <=>first value,second value ) `` see [this](https://docs.groovy-lang.org/latest/html/api/groovy/lang/Tuple2.html#getSecond()) and [this](https://docs.groovy-lang.org/latest/html/api/groovy/lang/Tuple2.html#getFirst())