Bug 126658 [CommonNavigator] [DND] Complete definition of DND API
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/internal/navigator/extensions/NavigatorContentDescriptor.java
INavigatorContentDescriptor, INavigatorContentExtPtConstants {
	private String id;
	private String name;
	private IConfigurationElement configElement;
	private int priority = Priority.NORMAL_PRIORITY_VALUE;
	private Expression enablement;
	private Expression possibleChildren;
	private String icon;
	private boolean activeByDefault;
	private IPluginContribution contribution;
	private Set overridingExtensions;
	private OverridePolicy overridePolicy;
	private String suppressedExtensionId;
	private INavigatorContentDescriptor overriddenDescriptor;
	/**