@JsonAnySetter
  public void add(String partitionId, Map<Short, Map<Short, ContainerStorageStats>> allAccountStats) {
    storageStats.put(Long.valueOf(partitionId), allAccountStats);
  }
Add partition id and partition level storage stats in this {@link HostAccountStorageStats}.
@param partitionId The partition id
@param allAccountStats The partition level (all accounts in this partition) stats.
ambry-api/src/main/java/com/github/ambry/server/storagestats/HostAccountStorageStats.java