public void propertyChanged(edu.cmu.cs.stage3.alice.core.event.PropertyEvent propertyEvent) {
   if (propertyEvent.getProperty() == m_each) {
     if (m_each.get() != null) {
       edu.cmu.cs.stage3.alice.core.Element l =
           (edu.cmu.cs.stage3.alice.core.Element) m_list.get();
       Class valueClass = null;
       if (l instanceof edu.cmu.cs.stage3.alice.core.List) {
         valueClass = (Class) ((edu.cmu.cs.stage3.alice.core.List) l).valueClass.get();
       } else if (l instanceof edu.cmu.cs.stage3.alice.core.Variable) {
         valueClass =
             (Class)
                 ((edu.cmu.cs.stage3.alice.core.List)
                         ((edu.cmu.cs.stage3.alice.core.Variable) l).value.get())
                     .valueClass.get();
       }
       ((edu.cmu.cs.stage3.alice.core.Variable) m_each.get()).valueClass.set(valueClass);
       setVariableName();
     }
   }
   if (propertyEvent.getProperty() == m_list) {
     if (m_list.get() != null && !nameListening) {
       ((edu.cmu.cs.stage3.alice.core.Element) m_list.get()).name.addPropertyListener(this);
       nameListening = true;
     }
     setVariable();
   } else if (m_list.get() != null
       && propertyEvent.getProperty()
           == ((edu.cmu.cs.stage3.alice.core.Element) m_list.get()).name) {
     setVariableName();
   } else {
     super.propertyChanged(propertyEvent);
   }
 }
 @Override
 public void propertyChanged(edu.cmu.cs.stage3.alice.core.event.PropertyEvent propertyEvent) {
   if (propertyEvent.getProperty() == m_isCommentedOut) {
     revalidate();
     repaint();
   } else {
     updateGUI();
   }
 }