try {
ti = (TestInterface1)DiscoverSingleton.find(null,
new SPInterface(TestInterface1.class),
new PropertiesHolder("TestInterface.properties"),
new DefaultClassHolder(TestImpl1_2.class.getName()));
assertTrue(ti.getClass().getName() + "!=" + TestImpl1_1.class.getName(),
ti.getClass().getName().equals(TestImpl1_1.class.getName()));
} finally {
DiscoverSingleton.release();