title: How do I make a write operation in Realm (iOS) synchronous?
body: <p>As part of an two step analysis process, I need data to be written to the persistent storage prior to the second step beginning. If I do this asynchronously via fina grain notifications its a bit messy. It would be great two do it in-line in one function.</p>
  
  <p>Is it possible to make a Realm().write { } opperations synchronous? The second step will need to read this data back. </p>