Bug 67890 [PropertiesView] Exception when entries added to properties view
bundles/org.eclipse.ui.views/src/org/eclipse/ui/views/properties/PropertySheetViewer.java
/*
     *  (non-Javadoc)
     * @see org.eclipse.jface.viewers.Viewer#setSelection(org.eclipse.jface.viewers.ISelection, boolean)
     */
    public void setSelection(ISelection selection, boolean reveal) {
        
    }
    /**
     * Sets the status line manager this view will use to show messages.
     * 
     * @param manager
     *            the status line manager
     */
    public void setStatusLineManager(IStatusLineManager manager) {
        statusLineManager = manager;
    }
    /**
     * Shows the categories.
     */
    
    void showCategories() {
        isShowingCategories = true;
        refresh();
    }
    /**
     * Shows the expert properties.
     */
    
    void showExpert() {
        isShowingExpertProperties = true;