@Override
  public PoolFactory setSubscriptionRedundancy(int redundancyLevel) {
    if (redundancyLevel < -1) {
      throw new IllegalArgumentException(
          "queueRedundancyLevel must be greater than or equal to -1");
    }
    attributes.queueRedundancyLevel = redundancyLevel;
    return this;
  }
The cache that created this factory
geode-core/src/main/java/org/apache/geode/internal/cache/PoolFactoryImpl.java