title: Convert CompletableFuture (Java 8) to Future (Scala)
body: <p>I want to change the return type of the method below to <code>Future[Unit]</code></p>
  
  <pre><code>def send(data: Array[Byte]): CompletableFuture[Void] = {
    val f:CompletableFuture[Void] = client.send(data)
    f
  }
  </code></pre>
  
  <p>I'm using Scala 2.12.1. Is there any convenient way to convert from Java 8 <code>CompletableFuture</code> to Scala's <code>Future</code>?</p>