* 
     * @return This <code>Exchange</code> to permit method call chaining
     * @throws PersistitException
     */
    public Exchange fetch(Value value, int minimumBytes) throws PersistitException {
        assertCorrectThread(true);
        _persistit.checkClosed();

        _key.testValidForStoreAndFetch(_volume.getPageSize());
        if (minimumBytes < 0) {
            minimumBytes = 0;
        }
        searchAndFetchInternal(value, minimumBytes);
        return this;
    }