Bug 296456 [Import/Export] File -> Import filesystem w/cyclical symbolic folder links causes OOME
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/datatransfer/WizardFileSystemResourceImportPage1.java
*/
    protected MinimizedFileSystemElement createRootElement(
            Object fileSystemObject, IImportStructureProvider provider) {
        boolean isContainer = provider.isFolder(fileSystemObject);
        String elementLabel = provider.getLabel(fileSystemObject);
        
        
        MinimizedFileSystemElement dummyParent = new MinimizedFileSystemElement(
                "", null, true);
        dummyParent.setPopulated();
        MinimizedFileSystemElement result = new MinimizedFileSystemElement(
                elementLabel, dummyParent, isContainer);
        result.setFileSystemObject(fileSystemObject);
        
        result.getFiles(provider);
        return dummyParent;
    }
    /**
     *	Create the import source specification widgets
     */
    protected void createSourceGroup(Composite parent) {
        createRootDirectoryGroup(parent);
        createFileSelectionGroup(parent);
        createButtonsGroup(parent);
    }
    /**
     * Enable or disable the button group.
     */
    protected void enableButtonGroup(boolean enable) {
        selectTypesButton.setEnabled(enable);