@Override
  public void toStringClassDetails(final StringBuilder sb) {
    super.toStringClassDetails(sb);
    sb.append(", region=").append(getRegion().getShortNameToLog());
  }
Used when deserializing. Otherwise, DON'T TOUCH IT!
hbase-server/src/main/java/org/apache/hadoop/hbase/master/procedure/AbstractStateMachineRegionProcedure.java