protected void makeScrollableCompositeAware(Control control) {
   ScrolledPageContent parentScrolledComposite = getParentScrolledComposite(control);
   if (parentScrolledComposite != null) {
     parentScrolledComposite.adaptChild(control);
   }
 }
 protected final void expandedStateChanged(ExpandableComposite expandable) {
   ScrolledPageContent parentScrolledComposite = getParentScrolledComposite(expandable);
   if (parentScrolledComposite != null) {
     parentScrolledComposite.reflow(true);
   }
 }