docs: public final void persistentRepresentationIsStable() throws SevereMessageStoreException
      {
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.entry(this, tc, "persistentRepresentationIsStable");
  
          boolean notifyRequired = false;
          AbstractItem item = null;
          synchronized (this)
          {
              if (!_persistentRepresentationIsStable)
              {
                  // if we have become stable and were releasable, then
                  // notify cache.
                  notifyRequired = _itemIsDiscardableIfPersistentRepresentationStable;
                  // 274012
                  if (notifyRequired)
                  {
                      item = _getItemNoRestore();
  
                      // Defect 601995
                      _strongReferenceToItem = NULL_STRONG_REF;
                  }
                  _persistentRepresentationIsStable = true;
              }
          }
          if (notifyRequired)
          {
              _declareReleasable(item);
          }
  
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.exit(this, tc, "persistentRepresentationIsStable");
      }