* Interrupted exceptions are caught and logged at debug level.
         */
        public void awaitTermination() {
            try {
                join();
            } catch (final InterruptedException e) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Interrupted.", e);
                }
            }
        }

        } catch (final Exception e) {
            throw new CrawlerSystemException(e);
        }
    }

    public void stop() {
        try {
            server.stop();
            server.join();
        } catch (final Exception e) {
            throw new CrawlerSystemException(e);
        } finally {
            if (tempDocRoot) {
                docRoot.delete();
            }
        }
    }

        } catch (final Exception e) {
            throw new CrawlerSystemException(e);
        }
    }

    public void stop() {
        try {
            server.stop();
            server.join();
        } catch (final Exception e) {
            throw new CrawlerSystemException(e);
        } finally {
            if (tempDocRoot) {
                docRoot.delete();
            }
        }
    }

            }
            this.thread = null;
        }
        t.interrupt();
        if (logger.isDebugEnabled()) {
            logger.debug("TimeoutManager stopped.");
        }
        t.join(timeoutMillis);
        return !t.isAlive();
    }

    /**
     * Clears the managed {@link TimeoutTask}.
     */
    public synchronized void clear() {
        timeoutTaskList.clear();
    }

        } catch (final Exception e) {
            throw new CrawlerSystemException(e);
        }
    }

    public void stop() {
        try {
            server.stop();
            server.join();
        } catch (final Exception e) {
            throw new CrawlerSystemException(e);
        } finally {
            if (tempDocRoot) {
                docRoot.delete();
            }
        }
    }

                instances[index] = LogStream.getInstance();
            });
            threads[i].start();
        }

        for (Thread thread : threads) {
            thread.join();
        }

        // All threads should get the same instance
        LogStream expected = instances[0];
        for (LogStream instance : instances) {
            assertSame(expected, instance);
        }

                urlFilter.addExclude(".*\\.type" + i + "$");
            }
        });

        thread1.start();
        thread2.start();

        thread1.join();
        thread2.join();

        // Should complete without errors
        assertNotNull(urlFilter);
    }

    /**
     * Test boundary conditions
     */
    public void test_boundaryConditions() {

        assertNotNull(titles);
        assertEquals("Sample Markdown Document", titles[0]);

        final String[] authors = extractData.getValues("frontmatter.author");
        assertNotNull(authors);
        assertEquals("John Doe", authors[0]);

        final String[] dates = extractData.getValues("frontmatter.date");
        assertNotNull(dates);
        assertEquals("2025-01-15", dates[0]);
    }

        }
    }

    private static void joinThread(final Thread thread) {
        try {
            thread.join();
        } catch (final InterruptedException e) {
            log.warn("Thread join interrupted", e);
            // Restore interrupted status
            Thread.currentThread().interrupt();
        }
    }

                }
            });
            threads[i].start();
        }

        // Wait for all threads to complete
        for (Thread thread : threads) {
            thread.join();
        }

        // All threads should complete successfully
        for (boolean s : success) {
            assertTrue(s);
        }
    }