code: public void sync() throws MarkLogicSesameException {
  		if(WRITE_CACHE_ENABLED && timerWriteCache != null)
  			timerWriteCache.forceRun();
  		if(DELETE_CACHE_ENABLED && timerDeleteCache != null)
  			timerDeleteCache.forceRun();
  	}
docs: forces write cache to flush triples
  
  @throws MarkLogicSesameException