It is the set of books whose metadata the method should return if that metadata was changed byt he set-field operation. Remember that is you for instance, change the case of a tag, it will be changed on all books that have that tag.
It is the set of books whose metadata the method should return if that
metadata was changed byt he set-field operation. Remember that is you
for instance, change the case of a tag, it will be changed on all books
that have that tag.