Bug 126658 [CommonNavigator] [DND] Complete definition of DND API
bundles/org.eclipse.ui.navigator.resources/src/org/eclipse/ui/internal/navigator/resources/actions/PortingActionProvider.java
.getWorkbench().getImportWizardRegistry(),
					WizardActionGroup.TYPE_IMPORT);
			exportWizardActionGroup = new WizardActionGroup(window, PlatformUI
					.getWorkbench().getExportWizardRegistry(),
					WizardActionGroup.TYPE_EXPORT);
			contribute = true;
		}
	}
	/**
	 * Extends the superclass implementation to dispose the subgroups.
	 */
	public void dispose() {
		if(!contribute)
			return;
		importWizardActionGroup.dispose();
		exportWizardActionGroup.dispose();
		importAction = null;
		exportAction = null;
		disposed = true;
	}
	public void fillActionBars(IActionBars theActionBars) {
		if(!contribute)
			return;
		Assert.isTrue(!disposed);
		theActionBars.setGlobalActionHandler(ActionFactory.IMPORT.getId(),
				importAction);
		theActionBars.setGlobalActionHandler(ActionFactory.EXPORT.getId(),
				exportAction);
	}
	public void fillContextMenu(IMenuManager aMenu) {