title: Can't find ServiceStack RequestContext
body: <p>Hello i've just created a fresh Empty webApp in VS and installed the servicestack Nugets.</p>
  
  <p>I was looking for caching responsed into memory(via MemCached) but in the service <code>Any</code> method i can't access to the <code>base.RequestContext</code> object.</p>
  
  <p>The class DO inherit from <code>ServiceStack.Service</code> (wasn't it <code>ServiceStack.ServiceInterface.Service</code> before?).</p>
  
  <pre><code>    public class UtentiService : Service
  {
  
      public object Get(I_Utenti request) 
      {
          var cacheKey = "myKey";
  
          return  base.RequestContext.ToOptimizedResultUsingCache(base.Cache, cacheKey, () =&gt;{});
      }
  }
  </code></pre>
  
  <p>But i cannot access to the <code>base.RequestContext</code>. Why?</p>
  
  <p>HSH, Pizza!</p>