void addRegion(Region region) {
    if (region.getAttributes().getPartitionAttributes() != null) {
      addPartitionedRegionStats(((PartitionedRegion) region).getPrStats());
    }

    InternalRegion internalRegion = (InternalRegion) region;
    addLRUStats(internalRegion.getEvictionStatistics());
    DiskRegion dr = internalRegion.getDiskRegion();
    if (dr != null) {
      for (DirectoryHolder dh : dr.getDirectories()) {
        addDirectoryStats(dh.getDiskDirectoryStats());
      }
    }
  }
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