* @return {@link PropertyDesc}
     */
    PropertyDesc getPropertyDesc(String propertyName);

    /**
     * Returns the {@link PropertyDesc}.
     *
     * @param index
     *            The index of the {@link PropertyDesc}
     * @return {@link PropertyDesc}
     */
    PropertyDesc getPropertyDesc(int index);

    /**
     * Returns the number of {@link PropertyDesc}.
     *

        assertArgumentNotEmpty("propertyName", propertyName);

        return propertyDescCache.get(propertyName) != null;
    }

    @Override
    public PropertyDesc getPropertyDesc(final String propertyName) {
        assertArgumentNotEmpty("propertyName", propertyName);

        final PropertyDesc pd = propertyDescCache.get(propertyName);
        if (pd == null) {

        propDesc.setValue(myBean, new Object());
    }

    /**
     * @throws Exception
     */
    @Test(expected = IllegalPropertyRuntimeException.class)
    public void testGetValue_notReable() throws Exception {
        final MyBean myBean = new MyBean();
        final BeanDesc beanDesc = new BeanDescImpl(MyBean.class);
        final PropertyDesc propDesc = beanDesc.getPropertyDesc("iii");

        propDesc = beanDesc.getPropertyDesc("CCC");
        assertThat(propDesc.getPropertyName(), is("CCC"));
        assertThat(propDesc.getPropertyType(), is(sameClass(boolean.class)));
        assertThat(propDesc.getReadMethod(), is(notNullValue()));
        assertThat(propDesc.getWriteMethod(), is(nullValue()));

        propDesc = beanDesc.getPropertyDesc("eee");

            if (!destBeanDesc.hasPropertyDesc(destPropertyName)) {
                continue;
            }
            final PropertyDesc destPropertyDesc = destBeanDesc.getPropertyDesc(destPropertyName);
            if (!destPropertyDesc.isWritable()) {
                continue;
            }
            final Object value = srcPropertyDesc.getValue(src);

import org.codelibs.core.beans.util.BeanUtil;
import org.codelibs.core.beans.util.CopyOptions;

// Bean metadata introspection
BeanDesc beanDesc = BeanDescFactory.getBeanDesc(MyBean.class);
PropertyDesc nameProperty = beanDesc.getPropertyDesc("name");
nameProperty.setValue(bean, "John Doe");

// Bean copying with flexible options
BeanUtil.copyBeanToBean(source, destination);
BeanUtil.copyBeanToBean(source, destination, options ->