code: public ZooJdoProperties setIgnoreCache(boolean flag) {
      	DBTracer.logCall(this, flag); 
  		put(Constants.PROPERTY_IGNORE_CACHE, Boolean.toString(flag));
  		return this;
  	}
docs: Whether queries should ignore objects in the cache. Default is 'false'.
  @param flag The flag
  @return this
  @see Constants#PROPERTY_IGNORE_CACHE