title: revitapi ironpython ToRoom returns "indexer # object"
body: <p>in revit api i am trying to access the ToRoom / FromRoom properties for doors.
  the simplified code snippet in ironpython:   </p>
  
  <pre><code>fc = FilteredElementCollector(doc)
  doors = fc.OfCategory(BuiltInCategory.OST_Doors).WhereElementIsNotElementType().ToElements()
  
  for door in doors:
      froom = door.FromRoom
  </code></pre>
  
  <p>my result is an "indexer # object at 0x0000000000035" 
  how can i access the room object from here?</p>