public static void setUsedByTest(boolean isUsedByTest) {
    HARegionQueue.isUsedByTest = isUsedByTest;
    if (!isUsedByTest) {
      HARegionQueue.testMarkerMessageReceived = isUsedByTest;
    }
  }
Set client conflation override

@since GemFire 5.7
geode-core/src/main/java/org/apache/geode/internal/cache/ha/HARegionQueue.java