title: Refactoring in VSCode with Dart not working
body: <p>I just started working with flutter and I am unable to refactor dart/flutter in VSCode.</p>
  
  <p>I am running VSCode on MacOSX and installed VSCode as per the flutter documentation, installed the dart and flutter plugins.
  flutter doctor shows no issues.</p>
  
  <p>The app I am creating runs fine on simulator and devices.</p>
  
  <p>When trying to rename a property, using the refactor shortcut, no option to rename is available.
  When trying to rename a class, I get 'No refactorings available'</p>
  
  <p>I can't believe this kind of refactoring would not be available.</p>
  
  <p>What am I missing in my setup? Any suggestions on what I can check, change in VSCode?</p>