title: Convert from Flux to Mono
body: <p>How can I convert from a Flux with 1 element to a Mono?</p>
  
  <pre><code>Flux.fromArray(arrayOf(1,2,1,1,1,2))
                  .distinct()
                  .take(1)
  </code></pre>
  
  <p>How do I make this a Mono(1)?</p>