assertEquals(echoCount1 + 1, Ext5Wrapper1.echoCount.get());
assertEquals(echoCount2 + 1, Ext5Wrapper2.echoCount.get());
assertEquals(yellCount1, Ext5Wrapper1.yellCount.get());
assertEquals(yellCount2, Ext5Wrapper2.yellCount.get());
assertEquals("Ext5Impl2-yell", impl2.yell(config, "ha"));
assertEquals(echoCount1 + 1, Ext5Wrapper1.echoCount.get());
assertEquals(echoCount2 + 1, Ext5Wrapper2.echoCount.get());
assertEquals(yellCount1 + 1, Ext5Wrapper1.yellCount.get());
assertEquals(yellCount2 + 1, Ext5Wrapper2.yellCount.get());
}