}

  public void testNewWriter() throws IOException {
    File temp = createTempFile();
    assertThrows(NullPointerException.class, () -> Files.newWriter(temp, null));

    assertThrows(NullPointerException.class, () -> Files.newWriter(null, UTF_8));

    BufferedWriter w = Files.newWriter(temp, UTF_8);
    try {
      w.write(I18N);
    } finally {
      w.close();
    }

    File i18nFile = getTestFile("i18n.txt");

  }

  public void testNewWriter() throws IOException {
    File temp = createTempFile();
    assertThrows(NullPointerException.class, () -> Files.newWriter(temp, null));

    assertThrows(NullPointerException.class, () -> Files.newWriter(null, UTF_8));

    BufferedWriter w = Files.newWriter(temp, UTF_8);
    try {
      w.write(I18N);
    } finally {
      w.close();
    }

    File i18nFile = getTestFile("i18n.txt");

      assertThrows(IOException.class, () -> okSource.copyTo(new TestCharSink(option)));
      // ensure reader was closed IF it was opened (depends on implementation whether or not it's
      // opened at all if sink.newWriter() throws).
      assertTrue(
          "stream not closed when copying to sink with option: " + option,
          !okSource.wasStreamOpened() || okSource.wasStreamClosed());
    }
  }

      assertThrows(IOException.class, () -> okSource.copyTo(new TestCharSink(option)));
      // ensure reader was closed IF it was opened (depends on implementation whether or not it's
      // opened at all if sink.newWriter() throws).
      assertTrue(
          "stream not closed when copying to sink with option: " + option,
          !okSource.wasStreamOpened() || okSource.wasStreamClosed());
    }
  }

   * @param charset the charset used to encode the output stream; see {@link StandardCharsets} for
   *     helpful predefined constants
   * @return the buffered writer
   */
  public static BufferedWriter newWriter(File file, Charset charset) throws FileNotFoundException {
    checkNotNull(file);
    checkNotNull(charset);
    return new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file), charset));
  }

  /**

   * @param charset the charset used to encode the output stream; see {@link StandardCharsets} for
   *     helpful predefined constants
   * @return the buffered writer
   */
  public static BufferedWriter newWriter(File file, Charset charset) throws FileNotFoundException {
    checkNotNull(file);
    checkNotNull(charset);
    return new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file), charset));
  }

  /**

        for (final SearchRequestParamsRewriter rewriter : searchRequestParamsRewriters) {
            newParams = rewriter.rewrite(newParams);
        }
        return newParams;
    }

    /**
     * Adds a search request parameter rewriter to the list of active rewriters.
     *
     * @param rewriter The parameter rewriter to add
     */

        assertEquals("ja", result[1].getValues()[1]);
    }

    // Test addRewriter method
    public void test_addRewriter() {
        SearchHelper.SearchRequestParamsRewriter rewriter = p -> p;

        searchHelper.addRewriter(rewriter);

        assertNotNull(searchHelper.searchRequestParamsRewriters);
        assertTrue(searchHelper.searchRequestParamsRewriters.length > 0);
    }

    // Test getLanguages method