code: public synchronized final void append(Link link)
      {
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled()) SibTr.entry(this, tc, "append");
  
          Link prev = _dummyTail._getPreviousLink();
          link._link(prev, _dummyTail, _nextPositionToIssue++, this);
          prev._setNextLink(link);
          _dummyTail._setPreviousLink(link);
  
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled()) SibTr.exit(this, tc, "append", _debugString());
      }
docs: Append a link to the end of the list.
  
  @param link