*/
  Graph<N> asGraph();

  //
  // Network properties
  //

  /**
   * Returns true if the edges in this network are directed. Directed edges connect a {@link
   * EndpointPair#source() source node} to a {@link EndpointPair#target() target node}, while
   * undirected edges connect a pair of nodes to each other.
   */
  boolean isDirected();

        assertTrue(filename.contains("/"));
    }

    // Test getImageFilename with docid - use the String version directly
    public void test_getImageFilename_withDocId() {
        String docid = "1234567890abcdef";
        // Call the String version directly
        String filename = thumbnailManager.getImageFilename(docid);
        assertNotNull(filename);
        assertTrue(filename.endsWith(".png"));

     * @return the Path object pointing to the site directory
     */
    public static Path getSitePath(final String... names) {
        return getPath("WEB-INF/", "site", names);
    }

    /**
     * Gets the path to plugin files directory.
     *
     * @param names the path components to append to the plugin directory
     * @return the Path object pointing to the plugin directory
     */

            assertTrue(true);
        } finally {
            if (outputFile.exists()) {
                outputFile.delete();
            }
        }
    }

    // Test parent directory scenarios
    public void test_generate_parent_directory_not_exists() throws Exception {
        final File tempDir = new File(System.getProperty("java.io.tmpdir"));

 * a file or directory that would be more accessible.
 */
@J2ktIncompatible
@GwtIncompatible
@J2ObjCIncompatible
abstract class TempFileCreator {
  static final TempFileCreator INSTANCE = pickSecureCreator();

  /**
   * @throws IllegalStateException if the directory could not be created (to implement the contract

            if (logger.isInfoEnabled()) {
                logger.info("SuggestCreator: \nDirectory={}\nOptions={}", baseDir, cmdList);
            }

            final JobProcess jobProcess = processHelper.startProcess(sessionId, cmdList, pb -> {
                pb.directory(baseDir);
                pb.redirectErrorStream(true);
            });

            if (logger.isInfoEnabled()) {
                logger.info("ThumbnailGenerator: \nDirectory={}\nOptions={}", baseDir, cmdList);
            }

            final JobProcess jobProcess = processHelper.startProcess(sessionId, cmdList, pb -> {
                pb.directory(baseDir);
                pb.redirectErrorStream(true);
            });

        return redirectWith(getClass(), moreUrl("list/" + encodeId(pi.getPath())));
    }

    /**
     * Creates a new directory in the storage system.
     *
     * @param form the item form containing directory information
     * @return HTML response redirecting to the new directory
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse createDir(final ItemForm form) {

     */
    public void setCommandTimeout(final long commandTimeout) {
        this.commandTimeout = commandTimeout;
    }

    /**
     * Sets the base directory for command execution.
     * @param baseDir The base directory.
     */
    public void setBaseDir(final File baseDir) {
        this.baseDir = baseDir;
    }

    /**
     * Sets the timeout for destroying processes.

            if (dir == null) {
                return false;
            }
            final File directory = dir.toFile();
            if (directory.list() != null && directory.list().length == 0 && !THUMBNAILS_DIR_NAME.equals(directory.getName())) {
                Files.delete(dir);
                if (logger.isDebugEnabled()) {
                    logger.debug("Delete {}", dir);