transformer1.setName("instance1");
        transformer2.setName("instance2");
        transformer3.setName("instance3");

        assertEquals("instance1", transformer1.getName());
        assertEquals("instance2", transformer2.getName());
        assertEquals("instance3", transformer3.getName());

        // Change one instance's name
        transformer2.setName("changed2");

            final ResponseData responseData = ftpClient.doHead("ftp://localhost:" + FTP_PORT + "/text1.txt");
            assertNotNull(responseData.getLastModified());
            assertTrue(responseData.getLastModified().getTime() < new Date().getTime());
            assertNull(responseData.getResponseBody());
        } finally {
            if (server != null) {
                server.stop();
            }
        }
    }

        Method[] methods = SystemMonitorTarget.class.getDeclaredMethods();

        for (Method method : methods) {
            if (method.getName().startsWith("append") && !method.getName().equals("append")) {
                assertTrue("Private append methods should be private: " + method.getName(),
                        java.lang.reflect.Modifier.isPrivate(method.getModifiers()));
            }
        }
    }

    }

    /**
     * Test getName implementation
     */
    public void test_getName() {
        assertEquals("testTransformer", testTransformer.getName());

        // Test with null name
        TestTransformer nullNameTransformer = new TestTransformer();
        assertNull(nullNameTransformer.getName());

        // Test with empty name

        List<DirectoryCacheEntry.FileInfo> children = cacheEntry.getChildren();
        assertTrue(children.stream().anyMatch(f -> "file1.txt".equals(f.getName())));
        assertTrue(children.stream().anyMatch(f -> "dir1".equals(f.getName())));
    }

    @Test
    public void testUpdateDirectoryCache() throws IOException {
        String directoryPath = "/test/dir";

   * Returns a human-readable string representation of {@code type}.
   *
   * <p>The format is subject to change.
   */
  static String toString(Type type) {
    return (type instanceof Class) ? ((Class<?>) type).getName() : type.toString();
  }

  static @Nullable Type getComponentType(Type type) {
    checkNotNull(type);
    AtomicReference<@Nullable Type> result = new AtomicReference<>();
    new TypeVisitor() {

        // Verify all children are present
        assertTrue(children.stream().anyMatch(f -> "file1.txt".equals(f.getName())));
        assertTrue(children.stream().anyMatch(f -> "file2.txt".equals(f.getName())));
        assertTrue(children.stream().anyMatch(f -> "dir1".equals(f.getName())));
    }

    @Test
    public void testMarkComplete() {

                            responseData.setMimeType(mimeTypeHelper.getContentType(is, file.getName()));
                        } catch (final Exception e) {
                            responseData.setMimeType(mimeTypeHelper.getContentType(null, file.getName()));
                        }
                    } else {
                        if (logger.isDebugEnabled()) {

        Callback[] cbs = new Callback[] { nc, pc };
        auth.handle(cbs);

        // Name should be formatted as username@domain
        assertEquals("user@DOM", nc.getName());
        // Password should be set
        assertEquals("pass", new String(pc.getPassword()));
    }

    @Test
    @DisplayName("handle: sets only provided callbacks (name-only)")

   * Returns a human-readable string representation of {@code type}.
   *
   * <p>The format is subject to change.
   */
  static String toString(Type type) {
    return (type instanceof Class) ? ((Class<?>) type).getName() : type.toString();
  }

  static @Nullable Type getComponentType(Type type) {
    checkNotNull(type);
    AtomicReference<@Nullable Type> result = new AtomicReference<>();
    new TypeVisitor() {