How do I use Reactor's StepVerifier to verify a Mono is empty? : <p>I am using <code>StepVerifier</code> to test values:</p>

<pre><code>@Test
public void testStuff() {
    Thing thing = new Thing();
    Mono&lt;Thing&gt; result = Mono.just(thing);
    StepVerifier.create(result).consumeNextWith(r -&gt; {
        assertEquals(thing, r);
    }).verifyComplete();
}
</code></pre>

<p>What I'd like to do now is test for the absence of an item in the Mono.  Like this:</p>

<pre><code>@Test
public void testNoStuff() {
    Mono&lt;Thing&gt; result = Mono.empty();
    StepVerifier.create(result)... // what goes here?
}
</code></pre>

<p>I want to test that the Mono is in fact empty.  How do I do that?</p>
