code: public synchronized void registerKey(DispatchableKey key)
    {
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
        SibTr.entry(tc, "registerKey", key);
      keyRegistry.add(key);
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
        SibTr.exit(tc, "registerKey");
    }
docs: Returns the name of a classification specified by XD.
  
  @return