Description Jan Koehnlein 2015-09-08 09:30:44 EDT

In the following Xtend class, the first call to descendingSet works, while the second fails:

  abstract class Outer<V> implements NavigableSet<V> {
    abstract static class Inner<V> extends Outer<V> {		
      override descendingSet() {
        super.descendingSet()
      } 
    }
  

    def Outer<V> descendingSet() {
      val Inner<V> range = null
      return range.descendingSet()  
        // Type mismatch: cannot convert from Outer<Object> to Outer<V>
    }
	
    override Outer<V> descendingSet2() {
      val Outer<V> range = null
      return range.descendingSet() // works
    }
	
  }