final List<String> nextInputs = new ArrayList<>();

            // Process each input from the previous converter
            for (final String input : currentInputs) {
                if (resultSet.size() >= getMaxReadingNum()) {
                    break;
                }

                // Convert the input and collect results
                final List<String> results = converter.convert(input, field, lang);

        converter = testConverter;
    }

    @Test
    public void testGetMaxReadingNum() {
        // Test default max reading num
        assertEquals(10, converter.getMaxReadingNum());
    }

    @Test
    public void testInitNormal() throws IOException {
        // Test normal initialization
        converter.init();
        assertTrue(testConverter.isInitialized());
    }

 */
public interface ReadingConverter {

    /**
     * Returns the maximum number of readings.
     *
     * @return the maximum number of readings, default is 10.
     */
    default int getMaxReadingNum() {
        return 10;
    }

    /**
     * Initializes the converter.
     *
     * @throws IOException if an I/O error occurs during initialization.
     */
    void init() throws IOException;

                if (j == 0) {
                    for (final StringBuilder buf : bufList) {
                        buf.append(alphabets[j]);
                    }
                } else if (bufList.size() < getMaxReadingNum()) {
                    final List<StringBuilder> tmpBufList = deepCopyBufList(originBufList);
                    for (final StringBuilder buf : tmpBufList) {
                        buf.append(alphabets[j]);