} else if (o instanceof String) {
            return toShort((String) o);
        } else if (o instanceof java.util.Date) {
            if (pattern != null) {
                return Short.valueOf(new SimpleDateFormat(pattern).format(o));
            }
            return (short) ((java.util.Date) o).getTime();
        } else if (o instanceof Boolean) {
            return ((Boolean) o) ? (short) 1 : (short) 0;

        final MyBean myBean = new MyBean();
        final BeanDesc beanDesc = new BeanDescImpl(MyBean.class);
        final PropertyDesc propDesc = beanDesc.getPropertyDesc("ggg");
        propDesc.setValue(myBean, Integer.valueOf(1));
        assertThat(myBean.getGgg(), is(new BigDecimal(1)));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testSetTimestampValue() throws Exception {

        case java.util.Date d -> pattern != null ? Integer.valueOf(new SimpleDateFormat(pattern).format(d)) : (int) d.getTime();
        case Boolean b -> b ? 1 : 0;
        default -> toInteger(o.toString());
        };
    }

    private static Integer toInteger(final String s) {
        if (StringUtil.isEmpty(s)) {
            return null;
        }
        return Integer.valueOf(DecimalFormatUtil.normalize(s));
    }

    /**

        // Test Method enum values
        Method[] methods = Method.values();
        assertEquals(3, methods.length);

        assertEquals(Method.GET, Method.valueOf("GET"));
        assertEquals(Method.POST, Method.valueOf("POST"));
        assertEquals(Method.HEAD, Method.valueOf("HEAD"));
    }

    public void test_complexScenario() {
        // Test a complex scenario with multiple operations

/**
 * @author higa
 *
 */
public class LongConversionUtilTest extends TestCase {

    /**
     * @throws Exception
     */
    public void testToLong() throws Exception {
        assertEquals(Long.valueOf("1000"), LongConversionUtil.toLong("1,000"));
    }

    /**
     * @throws Exception
     */
    public void testToPrimitiveLong() throws Exception {

        assertThat(new CopyOptions().convertValue(Integer.valueOf(1), "aaa", null), is((Object) 1));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testConvertValue_propertyConverter_asString() throws Exception {
        assertThat(new CopyOptions().converter(new NumberConverter("##0"), "aaa").convertValue(Integer.valueOf(1), "aaa", null),
                is((Object) "1"));
    }

/**
 * @author higa
 *
 */
public class ShortConversionUtilTest extends TestCase {

    /**
     * @throws Exception
     */
    public void testToShort() throws Exception {
        assertEquals(Short.valueOf("1000"), ShortConversionUtil.toShort("1,000"));
    }

    /**
     * @throws Exception
     */
    public void testToPrimitiveShort() throws Exception {

/**
 * @author higa
 *
 */
public class ByteConversionUtilTest extends TestCase {

    /**
     * @throws Exception
     */
    public void testToByte() throws Exception {
        assertEquals(Byte.valueOf("100"), ByteConversionUtil.toByte("100"));
    }

    /**
     * @throws Exception
     */
    public void testToPrimitiveByte() throws Exception {
        assertEquals(100, ByteConversionUtil.toPrimitiveByte("100"));

/**
 * @author higa
 *
 */
public class DoubleConversionUtilTest extends TestCase {

    /**
     * @throws Exception
     */
    public void testToDouble() throws Exception {
        assertEquals(Double.valueOf("1000.5"), DoubleConversionUtil.toDouble("1,000.5"));
    }

    /**
     * @throws Exception
     */
    public void testToPrimitiveDouble() throws Exception {

/**
 * @author higa
 *
 */
public class FloatConversionUtilTest extends TestCase {

    /**
     * @throws Exception
     */
    public void testToFloat() throws Exception {
        assertEquals(Float.valueOf("1000.5"), FloatConversionUtil.toFloat("1,000.5"));
    }

    /**
     * @throws Exception
     */
    public void testToPrimitiveFloat() throws Exception {