title: Calculated Properties in Odata v4 and Entity Framework
body: <p>Im working on a .Net Web Api 2.2 project and I'm using Odata v4 and Entity Framework code first.
  I need to have a calculated  property in a Model which is not to be saved in Database.</p>
  
  <p>I have tried <code>[notmapped]</code> attribute. But it hides the property in Odata $medadata. </p>
  
  <p>How can I overcome this issue?</p>