Salaboy/droolsjbpm-integration — comment on commit 5962f48a459462f399377dffac026d08ca4b3214
File: drools-simulator/src/main/java/org/drools/fluent/batch/imp/FluentBatchExecutionImpl.java line 116
By ge0ffrey:

This means it no longer logs a severe error if the lastAddedCommand doesn't implement IdentifiableResult.

But IMO, the better default behavior is probably to fail-fast when it isn't an instanceof IdentiableResult?