Section 5.4.2 strange index operator <<0>>

[ppazos]

Reading the docs, found this line:

author.books<<0>> // get the first book

Which I would expect to use books[0] instead of books<<0>>

This is the line in the code: https://github.com/grails/gorm-hibernate5/blob/8.0.x/docs/src/docs/asciidoc/domainClasses/sets%2CListsAndMaps.adoc?plain=1#L63

[jdaugherty]

This will be fixed in the next milestone publish of Grails 7