Discuss: Use Lifecycle Callbacks as is or test instance post-processing

[michael-simons]

See https://www.baeldung.com/junit-5-extensions

I realized that Neo4j itself uses test instance post-processing for a couple of things. I'm yet in the process of trying to understand advantages and disadvantages of the approach I did take here.

Wdyt @eastlondoner ? /cc @sormuras