code: public SimpleEntry getFirst()
    {
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
        SibTr.entry(this, tc, "getFirst");
  
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
        SibTr.exit(this, tc, "getFirst", new Object[] {first, printList()});
      
      return first;          
    }
docs: Return the first entry in the list (may be null)
  @return