title: Convert List<Mono<String>> to Flux<String>
body: <p>There are few question , but there answers are very specific to some code.</p>
  <p>Generally, how to convert a Stream of Mono to Flux</p>
  <pre><code>List&lt;Mono&lt;String&gt; listOfMono = stream()
  .map( s -&gt; { do something and return Mono&lt;String&gt; } )
  .collect(Collectors.toList());
  </code></pre>
  <p>How to convert <code>listOfMono</code> object to <code>Flux&lt;String&gt;</code></p>