title: How passing a protocol as parameter in Swift
body: <p>In Objective-C, I know how passing a <code>protocol</code> as parameter:</p>
  
  <pre><code>- (void)MyMethod:(Protocol *)myparameter
  </code></pre>
  
  <p>But in Swift there is no more <code>Protocol</code> type.</p>
  
  <p>How can I pass a protocol as parameter without knowing which is ?</p>