title: Azure DocumentDB Null Handling
body: <p>I have started working with Microsoft's NoSQL services on Azure. One thing that came up was the aspect of how to exclude null based values from updating/saving operations. I haven't found anything explicit to how a null based value can be excluded from the JSON serialization if it is null. So if anyone knows how to do this I'd like to know.</p>
  
  <p>Peter</p>