title: How do I call an Swift method with a closure from Objective-c?
body: <p>I have the following Swift method:</p>
  
  <pre><code>public func login(userLogin: String, userPassword: String, completion:@escaping (_ result: Result&lt;Data, PZError&gt;) -&gt; ())
  </code></pre>
  
  <p>And I would like to call it from Objective-C but can't figure out the closure portion:</p>
  
  <pre><code>[apiController loginWithUserLogin:userLogin userPassword:password completion:???];
  </code></pre>
  
  <p>What would my completion code look like in Objective-C?</p>