title: Different project properties in Eclipse
body: <p>I am trying to run 2 different projects from Github in eclipse one is 
  <a href="https://github.com/wumpz/jhotdraw" rel="nofollow noreferrer">Jhotdraw</a> and other is  <a href="https://github.com/refdiff-data/retrofit" rel="nofollow noreferrer">Retrofit</a>. My aim is to compute some metric values using a plugin when I check the project properties both show differntly <a href="https://i.stack.imgur.com/iEfSi.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/iEfSi.jpg" alt="retrofit properties"></a><a href="https://i.stack.imgur.com/eRZjY.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/eRZjY.jpg" alt="Jhotdraw properties"></a>. Can anybody tell me why is that? and how to add the missing properties?</p>