assertTrue(ExtensionLoader.getExtensionLoader(SimpleExt.class).getExtension("impl2") instanceof SimpleExtImpl2);
}
@Test
public void test_getExtension_WithWrapper() throws Exception {
WrappedExt impl1 = ExtensionLoader.getExtensionLoader(WrappedExt.class).getExtension("impl1");
assertThat(impl1, anyOf(instanceOf(Ext5Wrapper1.class), instanceOf(Ext5Wrapper2.class)));
WrappedExt impl2 = ExtensionLoader.getExtensionLoader(WrappedExt.class).getExtension("impl2") ;
assertThat(impl2, anyOf(instanceOf(Ext5Wrapper1.class), instanceOf(Ext5Wrapper2.class)));
URL url = new URL("p1", "1.2.3.4", 1010, "path1");
int echoCount1 = Ext5Wrapper1.echoCount.get();