code: public void unsetSbbContext() {
  		this.sbbContext = null;
  		this.tracer = null;
  		this.timerFacility = null;
  		this.nullACIFactory = null;
  		this.nullActivityFactory = null;
  		this.sipProvider = null;
  	}
docs: /*
  (non-Javadoc)
  
  @see javax.slee.Sbb#unsetSbbContext()