// Wait for all threads to complete
        for (Thread thread : threads) {
            try {
                thread.join();
            } catch (InterruptedException e) {
                fail("Thread interrupted: " + e.getMessage());
            }
        }

        // Verify all threads got the same instances
        for (int i = 0; i < threadCount; i++) {
            assertSame(invertibleCryptographer, invertibles[i]);

         * 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);
                }
            }
        }

            });

            try {
                latch.await();
            } catch (final InterruptedException ignore) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Interrupted.", ignore);
                }
                exitCode.set(1);
            }
        }

        if (ComponentUtil.getFessConfig().isSuggestSearchLog()) {

                executorService.awaitTermination(60, TimeUnit.SECONDS);
            } catch (final InterruptedException e) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Executor shutdown interrupted", e);
                }
            } finally {
                executorService.shutdownNow();
            }
        }
    }

    /**

        }
    }

    // Test executeSuggestCreator with interrupted exception
    @Test
    public void test_executeSuggestCreator_withInterruptedException() {
        createRequiredDirectories();
        mockProcessHelper.setThrowException(new InterruptedException("Interrupted"));

        try {
            suggestJob.executeSuggestCreator();

            try {
                latch.await(streamCloseTimeout, TimeUnit.SECONDS);
            } catch (final InterruptedException e) {
                logger.warn("Interrupted to wait a process.", e);
            }
            try {
                process.destroyForcibly().waitFor(processDestroyTimeout, TimeUnit.SECONDS);
                return process.exitValue();

            throw e;
        } catch (final InterruptedException e) {
            if (mt != null && mt.isTeminated()) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Command execution interrupted due to timeout for user: username={}", username, e);
                }
                throw new CommandExecutionException("The command execution is timeout for user: " + username, e);
            }

                if (!task.isExecuted()) {
                    task.run();
                }
            }
        } catch (final InterruptedException e) {
            logger.warn("Interrupted generating thumbnail: id={}, command={}", thumbnailId, cmdList, e);
            Thread.currentThread().interrupt();
        } catch (final Exception e) {

            executorService.awaitTermination(60, TimeUnit.SECONDS);
        } catch (final InterruptedException e) {
            if (logger.isDebugEnabled()) {
                logger.debug("Interrupted.", e);
            }
        } finally {
            executorService.shutdownNow();
        }
        return totalCount;
    }

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

        try {
            thread1.join();
            thread2.join();
        } catch (InterruptedException e) {
            fail("Thread interrupted");
        }
    }

    @Test
    public void test_genericTypeSafety_withSubclass() {
        // Test that the exception accepts RootAction subclasses