title: Problems Querying nested lists in RavenDB
body: <p>I want to use RavenDB for a project I am doing, but before I can, I need figure out how to query nested objects...  Let me explain
  I have a class like this:</p>
  
  <pre><code>public class Customer
  {
   public string Id { get; set; }
   public string Name { get; set; }
   public IList&lt;Orders&gt; { get; set; }
  }
  </code></pre>
  
  <p>Then the Order class:</p>
  
  <pre><code>public class Order
  {
   public int OrderNumber { get; set; }
   public decimal OrderAmount { get; set; }
   public bool CustomerBilled { get; set; }
  }
  </code></pre>
  
  <p>I create a bunch of fake data and add it to Raven -- some Customers have orders with only CustomerBilled set to true, some with CustomerBilled set to false, and some a mix of true and false on CustomerBilled.</p>
  
  <p>What I need help with, is figuring out how to extract a list of Customers that 1 or more Orders with CustomerBilled set to false.</p>
  
  <p>How would I create a query to do it?  I can't seem to get one to work, and I have no idea how.</p>