final Map<String, Object> map = newHashMap();
        final BeanDesc beanDesc = BeanDescFactory.getBeanDesc(annotation.annotationType());
        for (final String name : beanDesc.getMethodNames()) {
            final Object v = getProperty(beanDesc, annotation, name);
            if (v != null) {
                map.put(name, v);
            }
        }
        return map;
    }

    /**

 * }
 *
 * for (ConstructorDesc constructorDesc : beanDesc.getConstructorDescs()) {
 *     constructorDesc.newInstance(...); // Foo のインスタンスを生成
 * }
 *
 * for (String methodName : beanDesc.getMethodNames()) {
 *     for (MethodDesc methodDesc : beanDesc.getMethodDescs(methodName)) {
 *         methodDesc.invoke(foo, ...); // Foo のメソッドを起動
 *     }
 * }
 * </pre>
 *
 * @author higa
 * @see BeanDescFactory

    /**
     * @throws Exception
     */
    @Test
    public void testGetMethodNames() throws Exception {
        final BeanDesc beanDesc = new BeanDescImpl(getClass());
        final String[] names = beanDesc.getMethodNames();
        for (final String name : names) {
            System.out.println(name);
        }
        assertThat(names.length > 0, is(true));
    }

    /**
     * @throws Exception
     */

        assertArgumentNotEmpty("methodName", methodName);

        return methodDescsCache.containsKey(methodName);
    }

    @Override
    public String[] getMethodNames() {
        return methodDescsCache.keySet().toArray(new String[methodDescsCache.size()]);
    }

    /**
     * {@link PropertyDesc}を返します。
     *
     * @param propertyName
     *            プロパティ名