Path dir = fs.getPath("dir");
        assertEquals(6, MoreFiles.listFiles(dir).size());

        method.delete(dir);
        method.assertDeleteSucceeded(dir);

        assertEquals(
            "contents of /dontdelete deleted by delete method " + method,
            3,
            MoreFiles.listFiles(fs.getPath("/dontdelete")).size());
      }
    }
  }

        Path dir = fs.getPath("dir");
        assertEquals(6, MoreFiles.listFiles(dir).size());

        method.delete(dir);
        method.assertDeleteSucceeded(dir);

        assertEquals(
            "contents of /dontdelete deleted by delete method " + method,
            3,
            MoreFiles.listFiles(fs.getPath("/dontdelete")).size());
      }
    }
  }

        }

        @Test
        void testListFiles() throws SmbException {
            // Arrange
            doReturn(new SmbFile[0]).when(smbFile).listFiles();

            // Act
            SmbFile[] files = smbFile.listFiles();

            // Assert
            assertNotNull(files);
            assertEquals(0, files.length);
        }

        @Test

        }

        @Test
        @DisplayName("listFiles with null root throws NullPointerException")
        void listFiles_withNullRoot_throwsNpe() {
            // Intent: null root is invalid input
            assertThrows(NullPointerException.class, () -> SmbEnumerationUtil.listFiles(null, "*", 0, null, null));
        }

        @Test

        val subprojectRoots = File("../platforms").listFiles(File::isDirectory).plus(File("../subprojects"))
        val subProjectFolders =
            subprojectRoots.map { it.listFiles(File::isDirectory).asList() }.flatten().filter { dir ->
                // filter out the directories that have only a `build` subdirectory - this usually happens after branch switching
                dir.listFiles { _: File, name: String -> name != "build" }!!.isNotEmpty()

    // First listing should hit the server
    long start1 = System.currentTimeMillis();
    SmbFile[] files1 = dir.listFiles();
    long time1 = System.currentTimeMillis() - start1;
    
    // Second listing should use cache (much faster)
    long start2 = System.currentTimeMillis();
    SmbFile[] files2 = dir.listFiles();
    long time2 = System.currentTimeMillis() - start2;
    
    assertEquals(files1.length, files2.length);

     */
    private
    fun TestFilesCleanupProjectState.tmpTestFiles(): LeftoverFiles = projectBuildDir.get().resolve("tmp/teŝt files")
        .listFiles()
        ?.associateWith { dir ->
            val dirPath = dir.toPath()
            Files.walk(dirPath).use { paths ->
                paths.filter { !it.toFile().isDirectory }
                    .limit(4)

        final List<File> fileList = new ArrayList<>(
                FileUtils.listFiles(new File(baseDir, "images"), fessConfig.getSupportedUploadedMediaExtentionsAsArray(), true));
        fileList.addAll(FileUtils.listFiles(new File(baseDir, "css"), fessConfig.getSupportedUploadedCssExtentionsAsArray(), true));
        fileList.addAll(FileUtils.listFiles(new File(baseDir, "js"), fessConfig.getSupportedUploadedJsExtentionsAsArray(), true));

            return new File[0];
        }
        final File libDir = new File(libPath);
        if (!libDir.exists()) {
            return new File[0];
        }
        return libDir.listFiles((file, name) -> name.startsWith(namePrefix));
    }

    /**
     * Gets plugin JAR files from the plugin directory that start with the specified prefix.
     *

        Map<String, Boolean> notices = new HashMap<>();
        Map<String, Boolean> sources = new HashMap<>();
        Set<File> shaFiles = new HashSet<>();

        for (File file : licensesDir.listFiles()) {
            String name = file.getName();
            if (name.endsWith(SHA_EXTENSION)) {
                shaFiles.add(file);
            } else if (name.endsWith("-LICENSE") || name.endsWith("-LICENSE.txt")) {