}
        }
    }

    /**
     * Polls the next URL queue entry for the specified session.
     * This method manages local caches and fetches from OpenSearch when needed.
     *
     * @param sessionId The session ID.
     * @return The next URL queue entry, or null if none available.
     */
    @Override

        target.ensureOpen(); // handle present but invalid per isValid=false
        target.close();
        verify(fileHandle, atLeastOnce()).release();
    }

    @Test
    @DisplayName("getSessionKey fetches via tree->session and returns bytes")
    void testGetSessionKey() throws CIFSException {
        when(pipe.ensureTreeConnected()).thenReturn(tree);
        when(tree.acquire()).thenReturn(tree);

        if (logHelper != null) {
            logHelper.log(key, objs);
        }
    }

    /**
     * Runs the crawling process in a separate thread.
     * This method fetches URLs from the queue, accesses content, processes responses,
     * and extracts child URLs until the crawling process is done or no more URLs are available.
     */
    @Override
    public void run() {

                log(buf);
            }
        });
    }

    /**
     * Marks statistics tracking as complete for the specified crawler object.
     * Decrements the reference count and if it reaches zero, removes the
     * statistics object from cache and outputs the final statistics.
     *
     * @param keyObj the crawler object to complete tracking for
     */
    public void done(final Object keyObj) {

        verify(tree, times(1)).release();
    }

    @Test
    @DisplayName("release() decrements usage; closes only when count reaches zero")
    void release_decrementsAndClosesOnZero() throws CIFSException {
        when(cfg.isTraceResourceUsage()).thenReturn(false);
        stubValidTree(8L, true, true);