def person = [fname: "john", sname: "smith", age: 25]
println person.keySet().last()
println person.entrySet().last()
println person.entrySet().last().value
CmRlZiBwZXJzb24gPSBbZm5hbWU6ICJqb2huIiwgc25hbWU6ICJzbWl0aCIsIGFnZTogMjVdCgpwcmludGxuIHBlcnNvbi5rZXlTZXQoKS5sYXN0KCkKcHJpbnRsbiBwZXJzb24uZW50cnlTZXQoKS5sYXN0KCkKcHJpbnRsbiBwZXJzb24uZW50cnlTZXQoKS5sYXN0KCkudmFsdWU=