code: private void reclaimSpace()
      {
          if (_nameMap == null)
              return;
  
          if (_nameMap.size() > 0 && _nameMap.size() % _reclaimPoint == 0) {
              synchronized (_nameMap) {
                  Set s = _nameMap.entrySet();
                  Iterator it = s.iterator();
                  while (it.hasNext()) {
                      Map.Entry e = (Map.Entry) it.next();
  
                      TrackingObject to = (TrackingObject) e.getValue();
  
                     // If the object has been reclaimed, then we remove the named object from the map.
                      WeakReference wr = to.getWeakINameable();
                      INameable o = (INameable) wr.get();
                      if (o == null) {
                          it.remove();
                      }
  
                  }
                  _reclaimPoint = _nameMap.size() + _reclaimIncrement;
               }
          }
      }
docs: This mehtod will check the name map for entries where the
  WeakReference object has been reclaimed.  When they are found it will
  reclaim the entry in the map.