@VisibleForTesting
  public void addCacheStats(CachePerfStats cachePerfStats) {
    Statistics cachePerfStatistics = cachePerfStats.getStats();
    monitor.addStatisticsToMonitor(cachePerfStatistics);
  }
This class acts as an Bridge between MemberMBean and GemFire Cache and Distributed System
geode-core/src/main/java/org/apache/geode/management/internal/beans/MemberMBeanBridge.java