Class<? super @NonNull E> type, E[] emptyArrayForContents, Iterable<? extends E> contents) {
    List<E> setContents = new ArrayList<>();
    for (E e : contents) {
      if (!setContents.contains(e)) {
        setContents.add(e);
      }
    }
    return new MinimalSet<>(type, setContents.toArray(emptyArrayForContents));
  }

  private MinimalSet(Class<? super @NonNull E> type, E... contents) {

        CloseableUtil.closeQuietly(in);
        logger.info(content);
        assertTrue(content.contains("テスト"));
    }

    public void test_getTika_hpp() {
        final InputStream in = ResourceUtil.getResourceAsStream("extractor/program/test.hpp");
        final ExtractData extractData = tikaExtractor.getText(in, null);
        final String content = extractData.getContent();

            final ExtractData result = extractor.getText(trackableStream, null);

            assertNotNull(result);
            assertNotNull(result.getContent());
            assertTrue(result.getContent().contains("テスト"));
        }
    }

    /**
     * Test that MsExcelExtractor properly closes resources on successful extraction.
     */

        final ExtractData extractData = markdownExtractor.getText(in, null);
        CloseableUtil.closeQuietly(in);

        final String content = extractData.getContent();
        logger.info(content);

        // Verify plain text extraction
        assertTrue(content.contains("Introduction"));
        assertTrue(content.contains("This is a sample Markdown document"));

        final ExtractData result = textExtractor.getText(in, null);

        assertNotNull(result);
        assertNotNull(result.getContent());
        assertTrue("Should contain line 0", result.getContent().contains("Line 0"));
        assertTrue("Should contain line 9999", result.getContent().contains("Line 9999"));
    }

    /**
     * Test extraction with various Unicode characters.
     */

        Map<String, String> params = new HashMap<String, String>();
        params.put("resourceName", "test.odt");
        ExtractData extractData = jodExtractor.getText(in, params);
        String content = extractData.getContent();
        CloseableUtil.closeQuietly(in);
        logger.info(content);
        assertTrue(content.contains("テスト"));
    }

    public void test_getText_ooow_as() {

        assertEquals("test-document.pdf", result.getContent());
    }

    /**
     * Test extraction with null parameters map.
     */
    public void test_getText_withNullParams() {
        final InputStream in = new ByteArrayInputStream(new byte[0]);

        final ExtractData result = filenameExtractor.getText(in, null);

        assertNotNull(result);
        assertEquals("", result.getContent());
    }

    /**

        CloseableUtil.closeQuietly(in);
        logger.info(content);
        assertTrue(content.contains("テスト"));
    }

    public void test_getHtml_sjis() {
        final InputStream in = ResourceUtil.getResourceAsStream("extractor/test_sjis.html");
        final String content = htmlXpathExtractor.getText(in, null).getContent();
        CloseableUtil.closeQuietly(in);

        final Map<String, String> params = new HashMap<String, String>();
        final ExtractData text = extractor.getText(new FileInputStream(contentFile), params);
        assertEquals(content, text.getContent());
    }

    public void test_getText_withUrl() throws IOException {
        final File scriptFile = createScriptTempFile(3);
        final String content = "TEST";

        final String content = xmlExtractor.getText(in, null).getContent();
        CloseableUtil.closeQuietly(in);
        logger.info(content);
        assertTrue(content.contains("テスト"));
    }

    public void test_getXml_entity() {
        final InputStream in = ResourceUtil.getResourceAsStream("extractor/test_entity.xml");
        final String content = xmlExtractor.getText(in, null).getContent();
        CloseableUtil.closeQuietly(in);