@Override
        public boolean done() {
          Set keysMap = ccp.cils[interestListIndex]
              .getProfile(SEPARATOR + REGION_NAME).getKeysOfInterestFor(ccp.getProxyID());
          return keysMap != null;
        }
returns the secondary that was stopped
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/tier/sockets/HAInterestTestCase.java