return fileList.stream().map(fileMap -> {
                try {
                    final String path = fileMap.get("path").toString();
                    final Date timestamp =
                            new SimpleDateFormat(Constants.DATE_FORMAT_ISO_8601_EXTEND_UTC).parse(fileMap.get("@timestamp").toString());
                    for (final DictionaryCreator creator : creatorList) {

            result.setCreatedBy(DfTypeUtil.toString(source.get("createdBy")));
            result.setCreatedTime(DfTypeUtil.toLong(source.get("createdTime")));
            result.setSuggestWord(DfTypeUtil.toString(source.get("suggestWord")));
            result.setTargetLabel(DfTypeUtil.toString(source.get("targetLabel")));
            result.setTargetRole(DfTypeUtil.toString(source.get("targetRole")));

        assertEquals(0, result);
    }

    @Test
    @DisplayName("toString should return correct format with pipe name")
    void testToString() {
        // Arrange
        transPeekNamedPipe = new TransPeekNamedPipe(mockConfig, TEST_PIPE_NAME, TEST_FID);

        // Act
        String result = transPeekNamedPipe.toString();

        // Assert
        assertNotNull(result);

      new ListenerCallQueue.Event<Object>() {
        @Override
        public void call(Object object) {
          throw new RuntimeException();
        }

        @Override
        public String toString() {
          return "throwing()";
        }
      };

  public void testEnqueueAndDispatch() {
    Object listener = new Object();
    ListenerCallQueue<Object> queue = new ListenerCallQueue<>();

      new ListenerCallQueue.Event<Object>() {
        @Override
        public void call(Object object) {
          throw new RuntimeException();
        }

        @Override
        public String toString() {
          return "throwing()";
        }
      };

  public void testEnqueueAndDispatch() {
    Object listener = new Object();
    ListenerCallQueue<Object> queue = new ListenerCallQueue<>();

                System.err.println("args: " + Arrays.toString(mvnArgs.toArray()));
                System.err.println("===================================================");
                System.err.println("stderr: " + stderr);
                System.err.println("===================================================");

                logs.put(goal, stdout.toString());
                if (exception != null) {

    }

    @Test
    public void test_toString() {
        // Test toString method
        String message = "Thumbnail generation failed for file.jpg";
        ThumbnailGenerationException exception = new ThumbnailGenerationException(message);

        String toStringResult = exception.toString();
        assertTrue(toStringResult.contains(ThumbnailGenerationException.class.getName()));

        MavenProperties sp = new MavenProperties(false);
        if (Files.exists(path)) {
            sp.load(path);
        }
        properties.forEach(
                (k, v) -> sp.put(k.toString(), escape ? DefaultInterpolator.escape(v.toString()) : v.toString()));
        loadIncludes(path, sp, callback);
        substitute(sp, callback);
        sp.forEach(properties::setProperty);
    }

    public static String separatorLine() {
        StringBuilder sb = new StringBuilder(DEFAULT_MAX_SIZE);
        repeat(sb, '*', DEFAULT_MAX_SIZE);
        return sb.toString();
    }

    public static List<String> format(String... lines) {
        int size = DEFAULT_MAX_SIZE;
        int remainder = size - 4; // 4 chars = 2 box_char + 2 spaces

    // Two futures should not have the same toString, to avoid people asserting on it
    assertThat(SettableFuture.create().toString()).isNotEqualTo(SettableFuture.create().toString());
  }

  public void testToString_oom() throws Exception {
    SettableFuture<Object> future = SettableFuture.create();
    future.set(
        new Object() {
          @Override
          public String toString() {
            throw new OutOfMemoryError();