hronously in your request interceptors, since your requests have to wait for the interceptors before firing over the network. If you need to do long running tasks before requests, try using a <code><a href="../Classes/Constraint.html">Constraint</a></code> instead.</p>
</blockquote>

<p>To create a <code>RequestInterceptor</code>, simply create a class/struct that conforms to the <code>RequestInterceptor</code> protocol, and implement the one required method: <code>intercept(resource: NetworkResource)</code