Bug 67890 [PropertiesView] Exception when entries added to properties view
bundles/org.eclipse.ui.views/src/org/eclipse/ui/views/properties/PropertySheetViewer.java
* 
     * @param message
     *            the message to be displayed, or <code>null</code>
     */
    private void setMessage(String message) {
        
        if (statusLineManager != null)
            statusLineManager.setMessage(message);
    }
    /**
     * Sets the root entry for this property sheet viewer. The root entry is not
     * visible in the viewer.
     * 
     * @param root
     *            the root entry
     */
    public void setRootEntry(IPropertySheetEntry root) {
        
        if (rootEntry != null)
            rootEntry.removePropertySheetEntryListener(entryListener);
        rootEntry = root;
        
        tree.setData(rootEntry);
        
        
        rootEntry.addPropertySheetEntryListener(entryListener);
        
        
        setInput(input);
    }