checkNotNull(file);
    File parent = file.getCanonicalFile().getParentFile();
    if (parent == null) {
      /*
       * The given directory is a filesystem root. All zero of its ancestors exist. This doesn't
       * mean that the root itself exists -- consider x:\ on a Windows machine without such a drive
       * -- or even that the caller can create it, but this method makes no such guarantees even for
       * non-root files.
       */

    }

    /**
     * Check if the previous page exists.
     * @return true if the previous page exists.
     */
    public boolean isExistPrePage() {
        return existPrePage;
    }

    /**
     * Set if the previous page exists.
     * @param existPrePage true if the previous page exists.
     */
    public void setExistPrePage(final boolean existPrePage) {

    }

    /**
     * Checks if previous page exists.
     *
     * @return true if previous page exists
     */
    public boolean isExistPrePage() {
        return existPrePage;
    }

    /**
     * Sets whether previous page exists.
     *
     * @param existPrePage true if previous page exists
     */
    public void setExistPrePage(final boolean existPrePage) {

    }

    /**
     * Checks if a previous page exists.
     * @return true if a previous page exists, false otherwise.
     */
    public boolean isExistPrePage() {
        return existPrePage;
    }

    /**
     * Sets whether a previous page exists.
     * @param existPrePage true if a previous page exists, false otherwise.
     */

        // Verify the properties path is set
        assertEquals(propFile.getAbsolutePath(), options.propertiesPath);
        assertTrue(new File(options.propertiesPath).exists());
    }

    public void test_process_withExpires() throws Exception {
        // Test that expires value is properly set
        Crawler.Options options = new Crawler.Options();

     */
    private void updateConnectionMetrics() {
        // Clean up metrics for connections that no longer exist
        connectionMetrics.entrySet().removeIf(entry -> {
            String key = entry.getKey();
            boolean exists = connections.stream().anyMatch(conn -> getConnectionKey(conn).equals(key));
            return !exists;
        });
    }

    /**
     * Get detailed health statistics
     */

    }

    /**
     * Returns true if a previous page exists.
     *
     * @return True if a previous page exists.
     */
    public boolean isExistPrePage() {
        return existPrePage;
    }

    /**
     * Sets whether a previous page exists.
     *
     * @param existPrePage True if a previous page exists.
     */
    public void setExistPrePage(final boolean existPrePage) {

// error returned when temporary account is not found
var errNoSuchTempAccount = errors.New("Specified temporary account does not exist")

// error returned when access key is not found
var errNoSuchAccessKey = errors.New("Specified access key does not exist")

// error returned in IAM subsystem when an account doesn't exist.

    }

    /**
     * Checks if a previous page exists.
     *
     * @return true if a previous page exists, false otherwise
     */
    public boolean isExistPrePage() {
        return existPrePage;
    }

    /**
     * Sets whether a previous page exists.
     *
     * @param existPrePage true if a previous page exists, false otherwise
     */

    }

    /**
     * Checks if a previous page exists.
     *
     * @return True if a previous page exists, false otherwise
     */
    public boolean isExistPrePage() {
        return existPrePage;
    }

    /**
     * Sets whether a previous page exists.
     *
     * @param existPrePage True if a previous page exists
     */
    public void setExistPrePage(final boolean existPrePage) {