public String getEvictionPolicy() {
    if (cacheServer.getClientSubscriptionConfig() != null) {
      return cacheServer.getClientSubscriptionConfig().getEvictionPolicy();
    }

    return null;
  }
Returns the eviction policy that is executed when capacity of the client queue is reached
geode-core/src/main/java/org/apache/geode/management/internal/beans/CacheServerBridge.java