public void test_atomicDeleteIfExists_existingFile() throws Exception {
        // Test that Files.deleteIfExists deletes existing file atomically
        Path tempFile = Files.createTempFile("toctou_cmd_test", ".tmp");
        try {
            assertTrue(Files.exists(tempFile));

            boolean deleted = Files.deleteIfExists(tempFile);

            assertTrue(deleted);
            assertFalse(Files.exists(tempFile));

        // Test that Files.deleteIfExists works correctly for no-image marker files
        Path noImageFile = Files.createTempFile("noimage_test", ".noimage");
        try {
            assertTrue(Files.exists(noImageFile));

            // Atomic delete should succeed
            boolean deleted = Files.deleteIfExists(noImageFile);

            assertTrue(deleted);

            assertTrue("File should contain content", Files.size(tempFile) > 0);

        } finally {
            Files.deleteIfExists(tempFile);
            Files.deleteIfExists(tempDir);
        }
    }

          new SimpleFileVisitor<Path>() {
            @Override
            public FileVisitResult visitFile(Path file, BasicFileAttributes attrs)
                throws IOException {
              Files.deleteIfExists(file);
              return FileVisitResult.CONTINUE;
            }

            @Override
            public FileVisitResult postVisitDirectory(Path dir, IOException exc)
                throws IOException {

              Files.deleteIfExists(file);
              return FileVisitResult.CONTINUE;
            }

            @Override
            public FileVisitResult postVisitDirectory(Path dir, IOException exc)
                throws IOException {
              if (exc != null) {
                return FileVisitResult.TERMINATE;
              }
              Files.deleteIfExists(dir);

            assertEquals("original", Files.readString(outsideTarget));
        } finally {
            Files.deleteIfExists(tempDir.resolve("example.com/page.html"));
            Files.deleteIfExists(tempDir.resolve("example.com"));
            deleteRecursive(outsideDir);
        }
    }