helper.setProperty(bean, "item", String.class, config);

        assertEquals(1, bean.getItems().size());
        assertEquals("item1", bean.getItems().get(0));
    }

    @Test
    void testPerformanceWithRepeatedCalls() throws Exception {
        TestBean bean1 = new TestBean();
        TestBean bean2 = new TestBean();
        PlexusConfiguration config = new XmlPlexusConfiguration("test");