title: How do I stub a chain of methods in Sinon?
body: <p>I know how to use stub to replace one function.</p>
  
  <pre><code>sandbox.stub(Cars, "findOne",
              () =&gt; {return car1 });
  </code></pre>
  
  <p>But now I have a line in my function I want to test that I need to stub that looks like this</p>
  
  <pre><code>Cars.find().fetch()
  </code></pre>
  
  <p>So there is a chain of function here and I'm unsure what I need to do. How do I stub "find" to return something that I can use to stub "fetch"?</p>