title: How to make IntelliJ show the real names for method parameters?
body: <p>How to I setup the IDEA IDE, so that it shows real param names for methods in build-in classes?</p>
  
  <p><a href="https://i.stack.imgur.com/zukpv.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/zukpv.png" alt="enter image description here"></a></p>
  
  <p><code>mvn clean install dependency:sources</code> did not help me</p>
  
  <p>upd:
  HttpExchange from package
  <code>import com.sun.net.httpserver.HttpExchange</code></p>