jetbrick-commons/src/main/java/jetbrick/io/buffer/FastBuffer.java
@Override
    public Iterator<E> iterator() {
        return new Iterator<E>() {

            int iteratorIndex;
            int iteratorBufferIndex;
            int iteratorOffset;

            @Override
            public boolean hasNext() {
                return iteratorIndex < size;
            }

            @Override
            public E next() {
                if (iteratorIndex >= size) {
                    throw new NoSuchElementException();
                }
                E[] buf = buffers[iteratorBufferIndex];
                E result = buf[iteratorOffset];

                // increment
                iteratorIndex++;
                iteratorOffset++;
                if (iteratorOffset >= buf.length) {
                    iteratorOffset = 0;
                    iteratorBufferIndex++;
                }

                return result;
            }

            @Override
            public void remove() {
                throw new UnsupportedOperationException();
            }
        };
    }
@Override
    public Iterator<E> iterator() {
        return new Iterator<E>() {

            int iteratorIndex;
            int iteratorBufferIndex;
            int iteratorOffset;

            @Override
            public boolean hasNext() {
                return iteratorIndex < size;
            }

            @Override
            public E next() {
                if (iteratorIndex >= size) {
                    throw new NoSuchElementException();
                }
                E[] buf = buffers[iteratorBufferIndex];
                E result = buf[iteratorOffset];

                // increment
                iteratorIndex++;
                iteratorOffset++;
                if (iteratorOffset >= buf.length) {
                    iteratorOffset = 0;
                    iteratorBufferIndex++;
                }

                return result;
            }

            @Override
            public void remove() {
                throw new UnsupportedOperationException();
            }
        };
    }
Returns an iterator over buffer elements.