code: public synchronized void reset()
     {
        if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled()) SibTr.entry(this, tc, "reset");
  
        valid = true;
        released = false;
  
        if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled()) SibTr.exit(this, tc, "reset");
     }
docs: This method should be called from code that wants to reset a buffer for transmission.
  Once this has been called, items should be placed into the buffer using the putXXX()
  methods before finally calling the getBufferForTransmission() method.