code: public void removeServletTimer(ServletTimer servletTimer, boolean updateAppSessionReadyToInvalidateState){
  		if(servletTimers != null) {
  			servletTimers.remove(servletTimer.getId());
  		}
  		if(updateAppSessionReadyToInvalidateState) {
  			updateReadyToInvalidateState();
  		}
  	}
docs: Remove a servlet timer from this application session
  @param servletTimer the servlet timer to remove