It's not urgent but it would be nice.
Better error messages
Works with Neo4j, we could remove our existing custom made assertions (maybe and maybe it should be a follow up issue).
If you are a new contributor, this could be a nice solution. Just, please, make sure to contact us for direction before tackling this.
Any progress on this one? https://github.com/hibernate/hibernate-search/pull/1646/files is a good starting point: you basically have to do a replace all for the imports, then you have a few things to fix manually but it shouldn't be too much.
The second step would be to see if we can remove our custom Neo4j assertions in favor of the Neo4j module of Assertj but it can be done as a second step (and in a second PR).