@Override
        public void afterIndexLookup(Collection coll) {
          indexUsed = true;
        }
Needed to fix this since the key "4" was not found and the size was then redueced to 3 after
invalidating the key 3
geode-core/src/integrationTest/java/org/apache/geode/cache/query/internal/index/IndexMaintenanceJUnitTest.java