@Override
  public void setDeviceInfo(IDeviceInfo<ICachedMNode> deviceInfo) {
    this.deviceInfo = deviceInfo;
  }
MNodeContainer reference and basic occupation, 8 + 80B.

<ol>
  Estimated delta size of CachedMNodeContainer compared with other MNodeContainer.
  <li>address, 8B
  <li>three map reference (1 cache and 2 buffer), 8 * 3 = 24B
  <li>estimate occupation of map implementation, minus the basic container occupation, 80 * 3 -
      80 = 160B
  <li>reference for deviceInfo
  <li>deviceInfo's size
</ol>
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/schemaengine/schemaregion/mtree/impl/pbtree/mnode/impl/CachedBasicInternalMNode.java