public override bool addAll(int index, java.util.Collection <Object> coll)
        {
            rangeCheck(index, sizeJ + 1);
            int cSize = coll.size();

            if (cSize == 0)
            {
                return(false);
            }

            checkModCount();
            parent.addAll(offset + index, coll);
            expectedModCount = parent.modCount;
            sizeJ           += cSize;
            modCount++;
            return(true);
        }