Groovy (and Java) support using names for groups in regular expressions.
The name of the group is defined using the syntax ?<name> where name must be replaced with the actual group name.
This is very useful, because you can use the group name to access the value that is captured by the defined regular expression in a java.util.regex.Matcher object.
Groovy supports for a long time accessing a group using the index operator.
Since Groovy 5 you can use the name of the group to access the value as well.
You can specify the name between square brackets ([<name>]) or use the name as property.
