StaticMDCBinder { public MDCAdapter getMDCA() { return adapter; } private  StaticMDCBinder(); MDCAdapter getMDCA(); String getMDCAdapterClassStr(); static final StaticMDCBinder SINGLETON; }
@Test public void instance() { assertThat(StaticMDCBinder.SINGLETON.getMDCA()).isInstanceOf(TinylogMdcAdapter.class); }