if (pcd == null) {
            return null;
        }
        return pcd.getRawClass();
    }

    @Override
    public Class<?> getKeyClassOfMap(final int index) {
        assertArgumentArrayIndex("index", index, parameterTypes.length);

        if (!Map.class.isAssignableFrom(parameterTypes[index]) || !isParameterized(index)) {
            return null;

     * @param index
     *            the index of the parameter
     * @return the key type if the parameter type at the specified index is a parameterized {@link Map}, otherwise {@literal null}
     */
    Class<?> getKeyClassOfMap(int index);

    /**
     * Returns the value type if the method's parameter type at the specified index is a parameterized {@link Map}.
     *
     * @param index
     *            the index of the parameter

     *
     * @param index
     *            The index of the parameter
     * @return The key type if the parameter type is a parameterized {@link Map}, otherwise {@literal null}
     */
    Class<?> getKeyClassOfMap(int index);

    /**
     * Returns the value type if the parameter type of the method is a parameterized {@link Map}.
     *
     * @param index
     *            The index of the parameter

    /**
     * Returns the key type if this field is a parameterized {@link Map}.
     *
     * @return the key type if this field is a parameterized {@link Map}, otherwise {@literal null}
     */
    Class<?> getKeyClassOfMap();

    /**
     * Returns the value type if this field is a parameterized {@link Map}.
     *
     * @return the value type if this field is a parameterized {@link Map}, otherwise {@literal null}
     */

    /**
     * Returns the key type if this property is a parameterized {@link Map}.
     *
     * @return the key type if this property is a parameterized {@link Map}, otherwise {@literal null}
     */
    Class<?> getKeyClassOfMap();

    /**
     * Returns the value type if this property is a parameterized {@link Map}.
     *
     * @return the value type if this property is a parameterized {@link Map}, otherwise {@literal null}
     */

        if (pcd == null) {
            return null;
        }
        return pcd.getRawClass();
    }

    @Override
    public Class<?> getKeyClassOfMap() {
        if (!Map.class.isAssignableFrom(fieldType) || !isParameterized()) {
            return null;
        }
        final ParameterizedClassDesc pcd = parameterizedClassDesc.getArguments()[0];

     */
    @Test
    public void testMap() throws Exception {
        final BeanDesc beanDesc = new BeanDescImpl(MyBean.class);
        final FieldDesc hoge = beanDesc.getFieldDesc("map");
        assertThat(hoge.getKeyClassOfMap(), is(sameClass(String.class)));
        assertThat(hoge.getValueClassOfMap(), is(sameClass(Integer.class)));
    }

    /**
     *
     */
    @SuppressWarnings("unused")