return nb;
    }


    
    public void reset() {
        this.index = start;
        length = 0;
        deferred = this;
    }
    public int getIndex() {
        return index;
    }
    public void setIndex(int index) {
        this.index = index;
    }
    public int getCapacity() {
        return buf.length - start;
    }
    public int getTailSpace() {

    }


    public void reset () {
        this.index = this.start;
        this.length = 0;
        this.deferred = this;
    }


    public int getIndex () {
        return this.index;
    }


    public void setIndex ( int index ) {
        this.index = index;
    }


    public int getCapacity () {
        return this.buf.length - this.start;
    }