title: break or return from when expressions
body: <p>What I would like to do:</p>
  
  <pre><code>when(transaction.state) {
      Transaction.Type.EXPIRED,
      //about 10 more types
      Transaction.Type.BLOCKED -&gt; {
          if (transaction.type == Transaction.Type.BLOCKED &amp;&amp; transaction.closeAnyway) {
              close(transaction)
              break //close if type is blocked and has 'closeAnyway' flag
          }
          //common logic
      }
      //other types
  }
  </code></pre>
  
  <p>I cannot write <code>break</code>:</p>
  
  <blockquote>
    <p>'break' and 'continue' are not allowed in 'when' statements. Consider using labels to continue/break from the outer loop.</p>
  </blockquote>
  
  <p>Is it a way to <code>return/break</code> from <code>when</code> statements? Or what is the best way to solve it?</p>