assertThat((Integer) beanDesc.newInstance(10), is(10));
        assertThat((Integer) beanDesc.newInstance("10"), is(10));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testNewInstance2() throws Exception {
        final BeanDesc beanDesc = new BeanDescImpl(Integer.class);
        assertThat((Integer) beanDesc.newInstance(new BigDecimal(10)), is(10));
    }

    /**

        assertArgumentNotNull("array", array);

        final int length = array.length;
        @SuppressWarnings("unchecked")
        final T[] newArray = (T[]) Array.newInstance(array.getClass().getComponentType(), length + 1);
        System.arraycopy(array, 0, newArray, 0, length);
        newArray[length] = obj;
        return newArray;
    }

    /**

     *             このコンストラクタが列挙型に関連している場合
     * @see Constructor#newInstance(Object[])
     */
    public static <T> T newInstance(final Class<T> clazz) throws InstantiationRuntimeException, IllegalAccessRuntimeException {
        assertArgumentNotNull("clazz", clazz);

        try {
            return clazz.newInstance();
        } catch (final InstantiationException e) {

        assertArgumentNotNull("src", src);
        assertArgumentNotNull("destClass", destClass);
        assertArgumentNotNull("options", options);

        final T dest = ClassUtil.newInstance(destClass);
        copyBeanToBean(src, dest, options);
        return dest;
    }

    /**
     * コピー元の{@literal Map}を新しいBeanのインスタンスにコピーして返します。
     *
     * @param <T> コピー先となるBeanの型

        }
        return arg;
    }

    private Object convertWithString(final Object arg) {
        if (stringConstructor != null) {
            return ConstructorUtil.newInstance(stringConstructor, arg);
        }
        if (valueOfMethod != null) {
            return MethodUtil.invoke(valueOfMethod, null, arg);
        }
        return arg;
    }

    @Override

        return unmodifiableCollection(fieldDescCache.values());
    }

    @Override
    public <T> T newInstance(final Object... args) {
        final ConstructorDesc constructorDesc = getSuitableConstructorDesc(args);
        return constructorDesc.newInstance(args);
    }

    @Override
    public ConstructorDesc getConstructorDesc(final Class<?>... paramTypes) {

    }

    /**
     * @throws Exception
     */
    @Test
    public void testSetArrayValue() throws Exception {
        final Object o = Array.newInstance(int.class, 3);
        Array.set(o, 0, new Integer(1));
        Array.set(o, 1, new Integer(2));
        Array.set(o, 2, new Integer(3));
        final int[] num = (int[]) o;

     * @return 配列
     */
    @SuppressWarnings("unchecked")
    public E[] toArray(E[] array) {
        if (array.length < size) {
            array = (E[]) Array.newInstance(array.getClass().getComponentType(), size);
        }
        int i = 0;
        for (Entry e = header.next; e != header; e = e.next) {
            array[i++] = e.element;
        }

     * @return 配列
     */
    public V[] toArray(final V[] proto) {
        @SuppressWarnings("unchecked")
        final V[] array = proto.length >= size ? proto : (V[]) Array.newInstance(proto.getClass().getComponentType(), size);
        for (int i = 0; i < array.length; i++) {
            array[i] = getAt(i);
        }
        if (array.length > size) {
            array[size] = null;
        }

            final GenericArrayType genericArrayType = GenericArrayType.class.cast(type);
            final Class<?> rawClass = getRawClass(genericArrayType.getGenericComponentType());
            return Array.newInstance(rawClass, 0).getClass();
        }
        return null;
    }

    /**
     * <code>type</code>の型引数の配列を返します。
     * <p>
     * <code>type</code>が配列型の場合はその要素型(それが配列の場合はさらにその要素型)を対象とします。
     * </p>