code: public boolean isClosed()
      {
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
          {
              SibTr.entry(tc, "isClosed", this);
              SibTr.exit(tc, "isClosed", Boolean.valueOf(_closed));
          }
          return _closed;
      }
docs: Returns true if this LCP is closed.
  
  @return