Bug 302791 [CommonNavigator] Associated editor does not close when deleting resource (editorInput) through CommonNavigator
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/internal/navigator/actions/CommonActionProviderDescriptor.java
private String overridesId;
	
	private String appearsBeforeId;
	private String toString;
	private Priority priority;
	/**
	 * @param aConfigElement
	 *            A configuration element with the name "actionProvider" and a
	 *            "class" attribute which subclasses
	 *            {@link CommonActionProvider}.
	 */
	public CommonActionProviderDescriptor(IConfigurationElement aConfigElement) {
		super();
		Assert.isTrue(TAG_ACTION_PROVIDER.equals(aConfigElement.getName()));
		configurationElement = aConfigElement;
		pluginId = configurationElement.getContributor().getName();
		isNested = false;
		init();
	}
	/**
	 * @param aConfigElement
	 *            A configuration element with the name "actionProvider" and a
	 *            "class" attribute which subclasses
	 *            {@link CommonActionProvider}.
	 * @param anEnablementExpression
	 *            A configuration element with the name 'enablement' or
	 *            'triggerPoints' and containing an Eclipse Core Expression
	 * @param defaultPriority 
	 * @param anOverrideId
	 *            A unique identifier for this descriptor. Ids can be used as a