int initFire = initMult; if (isTwoStage()) initFire++;
FilterTraceNode[] previous = getPreviousFilters();   int upStreamItems = 0;
    public int initItemsReceived()     {	int initFire = initMult;	if (isTwoStage())	    initFire++;		return (prePeek + bottomPeek + Math.max((initFire - 2), 0) * pop);    }