Description Zoltan Ujhelyi 2018-12-06 15:42:25 EST

After checking for an external error report, I have noticed that FixedPriorityConflictResolver works incorrectly when a middle-priority rule had no activations: in such cases the lower-priority rules were never called. A quick checkin has shown that the issue is an incorrect rewrite from Guava-s multimap to Map of lists for version 2.0. More specifically, for each priority, as empty collections remained in the internal data structure, but it was not required.