title: Is it possible for SelectNodes on an XmlDocument to return null?
body: <p>Is it possible for <code>SelectNodes()</code> called on an <code>XmlDocument</code> to return null?</p>
  
  <p>My predicament is that I am trying to reach 100% unit test code coverage; ReSharper tells me that I need to guard against a null return from the <code>SelectNodes()</code> method, but I can see no way that an XmlDocument can return null (and therefore, no way to test my guard clause and reach 100% unit test coverage!)</p>