Note: I also remove warnings for undefined operation in this patch, is a trivial fix
To test:
prove -v t/db_dependent/Koha/SearchEngine/Elasticsearch/QueryBuilder.t
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>