r can be used to attach an OAuth token that a constraint might have just receieved from a server. </p>

<p>To create a <code><a href="Protocols/RequestInterceptor.html">RequestInterceptor</a></code>, simply create a class/struct that conforms to the <code><a href="Protocols/RequestInterceptor.html">RequestInterceptor</a></code> protocol, and implement the one required method:</p>
<pre class="highlight swift"><code><span class="kd">class</span> <span class="kt">OAuthTokenAddingInterceptor</span><span class="