### Question:
DubboServerRequest extends RpcServerRequest implements DubboRequest { @Override public Invocation invocation() { return invocation; } DubboServerRequest(Invoker<?> invoker, Invocation invocation); @Override Invoker<?> invoker(); @Override Invocation invocation(); @Override Invocation unwrap(); @Override String method(); @Override String service(); @Override boolean parseRemoteIpAndPort(Span span);  }### Answer:
@Test public void invocation() { assertThat(request.invocation()).isSameAs(invocation); }