title: How to pretty print conn content?
body: <p>I tried the following</p>
  
  <pre><code>def index(conn, _params) do
      Logger.debug conn
       ......
  </code></pre>
  
  <p>But I get</p>
  
  <pre><code>protocol String.Chars not implemented for %Plug.Conn
  </code></pre>
  
  <p>I even tried Apex but that didn't worked either.</p>